/////////////////////////////////////////////////////////////////////////////
// Name: lines.cpp
// Purpose: wxLineShape
// Author: Julian Smart
// Modified by:
// Created: 12/07/98
// RCS-ID: $Id: lines.cpp,v 1.1.1.1 2003/06/06 11:28:04 horakdan Exp $
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation "lines.h"
#pragma implementation "linesp.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif
#include <wx/wxexpr.h>
#ifdef new
#undef new
#endif
#include <ctype.h>
#include <math.h>
#include <wx/ogl/basic.h>
#include <wx/ogl/basicp.h>
#include <wx/ogl/lines.h>
#include <wx/ogl/linesp.h>
#include <wx/ogl/drawn.h>
#include <wx/ogl/misc.h>
#include <wx/ogl/canvas.h>
// Line shape
IMPLEMENT_DYNAMIC_CLASS(wxLineShape, wxShape)
wxLineShape::wxLineShape()
{
m_sensitivity = OP_CLICK_LEFT | OP_CLICK_RIGHT;
m_draggable = FALSE;
m_attachmentTo = 0;
m_attachmentFrom = 0;
/*
m_actualTextWidth = 0.0;
m_actualTextHeight = 0.0;
*/
m_from = NULL;
m_to = NULL;
m_erasing = FALSE;
m_arrowSpacing = 5.0; // For the moment, don't bother saving this to file.
m_ignoreArrowOffsets = FALSE;
m_isSpline = FALSE;
m_maintainStraightLines = FALSE;
m_alignmentStart = 0;
m_alignmentEnd = 0;
m_lineControlPoints = NULL;
// Clear any existing regions (created in an earlier constructor)
// and make the three line regions.
ClearRegions();
wxShapeRegion *newRegion = new wxShapeRegion;
newRegion->SetName(wxT("Middle"));
newRegion->SetSize(150, 50);
m_regions.Append((wxObject *)newRegion);
newRegion = new wxShapeRegion;
newRegion->SetName(wxT("Start"));
newRegion->SetSize(150, 50);
m_regions.Append((wxObject *)newRegion);
newRegion = new wxShapeRegion;
newRegion->SetName(wxT("End"));
newRegion->SetSize(150, 50);
m_regions.Append((wxObject *)newRegion);
for (int i = 0; i < 3; i++)
m_labelObjects[i] = NULL;
}
wxLineShape::~wxLineShape()
{
if (m_lineControlPoints)
{
ClearPointList(*m_lineControlPoints);
delete m_lineControlPoints;
}
for (int i = 0; i < 3; i++)
{
if (m_labelObjects[i])
{
m_labelObjects[i]->Select(FALSE);
m_labelObjects[i]->RemoveFromCanvas(m_canvas);
delete m_labelObjects[i];
m_labelObjects[i] = NULL;
}
}
ClearArrowsAtPosition(-1);
}
void wxLineShape::MakeLineControlPoints(int n)
{
if (m_lineControlPoints)
{
ClearPointList(*m_lineControlPoints);
delete m_lineControlPoints;
}
m_lineControlPoints = new wxList;
int i = 0;
for (i = 0; i < n; i++)
{
wxRealPoint *point = new wxRealPoint(-999, -999);
m_lineControlPoints->Append((wxObject*) point);
}
}
wxNode *wxLineShape::InsertLineControlPoint(wxDC* dc)
{
if (dc)
Erase(*dc);
wxNode *last = m_lineControlPoints->Last();
wxNode *second_last = last->Previous();
wxRealPoint *last_point = (wxRealPoint *)last->Data();
wxRealPoint *second_last_point = (wxRealPoint *)second_last->Data();
// Choose a point half way between the last and penultimate points
double line_x = ((last_point->x + second_last_point->x)/2);
double line_y = ((last_point->y + second_last_point->y)/2);
wxRealPoint *point = new wxRealPoint(line_x, line_y);
wxNode *node = m_lineControlPoints->Insert(last, (wxObject*) point);
return node;
}
bool wxLineShape::DeleteLineControlPoint()
{
if (m_lineControlPoints->Number() < 3)
return FALSE;
wxNode *last = m_lineControlPoints->Last();
wxNode *second_last = last->Previous();
wxRealPoint *second_last_point = (wxRealPoint *)second_last->Data();
delete second_last_point;
delete second_last;
return TRUE;
}
void wxLineShape::Initialise()
{
if (m_lineControlPoints)
{
// Just move the first and last control points
wxNode *first = m_lineControlPoints->First();
wxRealPoint *first_point = (wxRealPoint *)first->Data();
wxNode *last = m_lineControlPoints->Last();
wxRealPoint *last_point = (wxRealPoint *)last->Data();
// If any of the line points are at -999, we must
// initialize them by placing them half way between the first
// and the last.
wxNode *node = first->Next();
while (node)
{
wxRealPoint *point = (wxRealPoint *)node->Data();
if (point->x == -999)
{
double x1, y1, x2, y2;
if (first_point->x < last_point->x)
{ x1 = first_point->x; x2 = last_point->x; }
else
{ x2 = first_point->x; x1 = last_point->x; }
if (first_point->y < last_point->y)
{ y1 = first_point->y; y2 = last_point->y; }
else
{ y2 = first_point->y; y1 = last_point->y; }
point->x = ((x2 - x1)/2 + x1);
point->y = ((y2 - y1)/2 + y1);
}
node = node->Next();
}
}
}
// Format a text string according to the region size, adding
// strings with positions to region text list
void wxLineShape::FormatText(wxDC& dc, const wxString& s, int i)
{
double w, h;
ClearText(i);
if (m_regions.Number() < 1)
return;
wxNode *node = m_regions.Nth(i);
if (!node)
return;
wxShapeRegion *region = (wxShapeRegion *)node->Data();
region->SetText(s);
dc.SetFont(* region->GetFont());
region->GetSize(&w, &h);
// Initialize the size if zero
if (((w == 0) || (h == 0)) && (s.Length() > 0))
{
w = 100; h = 50;
region->SetSize(w, h);
}
wxStringList *string_list = oglFormatText(dc, s, (w-5), (h-5), region->GetFormatMode());
node = string_list->First();
while (node)
{
wxChar *s = (wxChar *)node->Data();
wxShapeTextLine *line = new wxShapeTextLine(0.0, 0.0, s);
region->GetFormattedText().Append((wxObject *)line);
node = node->Next();
}
delete string_list;
double actualW = w;
double actualH = h;
if (region->GetFormatMode() & FORMAT_SIZE_TO_CONTENTS)
{
oglGetCentredTextExtent(dc, &(region->GetFormattedText()), m_xpos, m_ypos, w, h, &actualW, &actualH);
if ((actualW != w ) || (actualH != h))
{
double xx, yy;
GetLabelPosition(i, &xx, &yy);
EraseRegion(dc, region, xx, yy);
if (m_labelObjects[i])
{
m_labelObjects[i]->Select(FALSE, &dc);
m_labelObjects[i]->Erase(dc);
m_labelObjects[i]->SetSize(actualW, actualH);
}
region->SetSize(actualW, actualH);
if (m_labelObjects[i])
{
m_labelObjects[i]->Select(TRUE, & dc);
m_labelObjects[i]->Draw(dc);
}
}
}
oglCentreText(dc, &(region->GetFormattedText()), m_xpos, m_ypos, actualW, actualH, region->GetFormatMode());
m_formatted = TRUE;
}
void wxLineShape::DrawRegion(wxDC& dc, wxShapeRegion *region, double x, double y)
{
if (GetDisableLabel())
return;
double w, h;
double xx, yy;
region->GetSize(&w, &h);
// Get offset from x, y
region->GetPosition(&xx, &yy);
double xp = xx + x;
double yp = yy + y;
// First, clear a rectangle for the text IF there is any
if (region->GetFormattedText().Number() > 0)
{
dc.SetPen(GetBackgroundPen());
dc.SetBrush(GetBackgroundBrush());
// Now draw the text
if (region->GetFont()) dc.SetFont(* region->GetFont());
dc.DrawRectangle((long)(xp - w/2.0), (long)(yp - h/2.0), (long)w, (long)h);
if (m_pen) dc.SetPen(* m_pen);
dc.SetTextForeground(* region->GetActualColourObject());
#ifdef __WXMSW__
dc.SetTextBackground(GetBackgroundBrush().GetColour());
#endif
oglDrawFormattedText(dc, &(region->GetFormattedText()), xp, yp, w, h, region->GetFormatMode());
}
}
void wxLineShape::EraseRegion(wxDC& dc, wxShapeRegion *region, double x, double y)
{
if (GetDisableLabel())
return;
double w, h;
double xx, yy;
region->GetSize(&w, &h);
// Get offset from x, y
region->GetPosition(&xx, &yy);
double xp = xx + x;
double yp = yy + y;
if (region->GetFormattedText().Number() > 0)
{
dc.SetPen(GetBackgroundPen());
dc.SetBrush(GetBackgroundBrush());
dc.DrawRectangle((long)(xp - w/2.0), (long)(yp - h/2.0), (long)w, (long)h);
}
}
// Get the reference point for a label. Region x and y
// are offsets from this.
// position is 0, 1, 2
void wxLineShape::GetLabelPosition(int position, double *x, double *y)
{
switch (position)
{
case 0:
{
// Want to take the middle section for the label
int n = m_lineControlPoints->Number();
int half_way = (int)(n/2);
// Find middle of this line
wxNode *node = m_lineControlPoints->Nth(half_way - 1);
wxRealPoint *point = (wxRealPoint *)node->Data();
wxNode *next_node = node->Next();
wxRealPoint *next_point = (wxRealPoint *)next_node->Data();
double dx = (next_point->x - point->x);
double dy = (next_point->y - point->y);
*x = (double)(point->x + dx/2.0);
*y = (double)(point->y + dy/2.0);
break;
}
case 1:
{
wxNode *node = m_lineControlPoints->First();
*x = ((wxRealPoint *)node->Data())->x;
*y = ((wxRealPoint *)node->Data())->y;
break;
}
case 2:
{
wxNode *node = m_lineControlPoints->Last();
*x = ((wxRealPoint *)node->Data())->x;
*y = ((wxRealPoint *)node->Data())->y;
break;
}
default:
break;
}
}
/*
* Find whether line is supposed to be vertical or horizontal and
* make it so.
*
*/
void GraphicsStraightenLine(wxRealPoint *point1, wxRealPoint *point2)
{
double dx = point2->x - point1->x;
double dy = point2->y - point1->y;
if (dx == 0.0)
return;
else if (fabs(dy/dx) > 1.0)
{
point2->x = point1->x;
}
else point2->y = point1->y;
}
void wxLineShape::Straighten(wxDC *dc)
{
if (!m_lineControlPoints || m_lineControlPoints->Number() < 3)
return;
if (dc)
Erase(* dc);
wxNode *first_point_node = m_lineControlPoints->First();
wxNode *last_point_node = m_lineControlPoints->Last();
wxNode *second_last_point_node = last_point_node->Previous();
wxRealPoint *last_point = (wxRealPoint *)last_point_node->Data();
wxRealPoint *second_last_point = (wxRealPoint *)second_last_point_node->Data();
GraphicsStraightenLine(last_point, second_last_point);
wxNode *node = first_point_node;
while (node && (node != second_last_point_node))
{
wxRealPoint *point = (wxRealPoint *)node->Data();
wxRealPoint *next_point = (wxRealPoint *)(node->Next()->Data());
GraphicsStraightenLine(point, next_point);
node = node->Next();
}
if (dc)
Draw(* dc);
}
void wxLineShape::Unlink()
{
if (m_to)
m_to->GetLines().DeleteObject(this);
if (m_from)
m_from->GetLines().DeleteObject(this);
m_to = NULL;
m_from = NULL;
}
void wxLineShape::SetEnds(double x1, double y1, double x2, double y2)
{
// Find centre point
wxNode *first_point_node = m_lineControlPoints->First();
wxNode *last_point_node = m_lineControlPoints->Last();
wxRealPoint *first_point = (wxRealPoint *)first_point_node->Data();
wxRealPoint *last_point = (wxRealPoint *)last_point_node->Data();
first_point->x = x1;
first_point->y = y1;
last_point->x = x2;
last_point->y = y2;
m_xpos = (double)((x1 + x2)/2.0);
m_ypos = (double)((y1 + y2)/2.0);
}
// Get absolute positions of ends
void wxLineShape::GetEnds(double *x1, double *y1, double *x2, double *y2)
{
wxNode *first_point_node = m_lineControlPoints->First();
wxNode *last_point_node = m_lineControlPoints->Last();
wxRealPoint *first_point = (wxRealPoint *)first_point_node->Data();
wxRealPoint *last_point = (wxRealPoint *)last_point_node->Data();
*x1 = first_point->x; *y1 = first_point->y;
*x2 = last_point->x; *y2 = last_point->y;
}
void wxLineShape::SetAttachments(int from_attach, int to_attach)
{
m_attachmentFrom = from_attach;
m_attachmentTo = to_attach;
}
bool wxLineShape::HitTest(double x, double y, int *attachment, double *distance)
{
if (!m_lineControlPoints)
return FALSE;
// Look at label regions in case mouse is over a label
bool inLabelRegion = FALSE;
for (int i = 0; i < 3; i ++)
{
wxNode *regionNode = m_regions.Nth(i);
if (regionNode)
{
wxShapeRegion *region = (wxShapeRegion *)regionNode->Data();
if (region->m_formattedText.Number() > 0)
{
double xp, yp, cx, cy, cw, ch;
GetLabelPosition(i, &xp, &yp);
// Offset region from default label position
region->GetPosition(&cx, &cy);
region->GetSize(&cw, &ch);
cx += xp;
cy += yp;
double rLeft = (double)(cx - (cw/2.0));
double rTop = (double)(cy - (ch/2.0));
double rRight = (double)(cx + (cw/2.0));
double rBottom = (double)(cy + (ch/2.0));
if (x > rLeft && x < rRight && y > rTop && y < rBottom)
{
inLabelRegion = TRUE;
i = 3;
}
}
}
}
wxNode *node = m_lineControlPoints->First();
while (node && node->Next())
{
wxRealPoint *point1 = (wxRealPoint *)node->Data();
wxRealPoint *point2 = (wxRealPoint *)node->Next()->Data();
// Allow for inaccurate mousing or vert/horiz lines
int extra = 4;
double left = wxMin(point1->x, point2->x) - extra;
double right = wxMax(point1->x, point2->x) + extra;
double bottom = wxMin(point1->y, point2->y) - extra;
double top = wxMax(point1->y, point2->y) + extra;
if ((x > left && x < right && y > bottom && y < top) || inLabelRegion)
{
// Work out distance from centre of line
double centre_x = (double)(left + (right - left)/2.0);
double centre_y = (double)(bottom + (top - bottom)/2.0);
*attachment = 0;
*distance = (double)sqrt((centre_x - x)*(centre_x - x) + (centre_y - y)*(centre_y - y));
return TRUE;
}
node = node->Next();
}
return FALSE;
}
void wxLineShape::DrawArrows(wxDC& dc)
{
// Distance along line of each arrow: space them out evenly.
double startArrowPos = 0.0;
double endArrowPos = 0.0;
double middleArrowPos = 0.0;
wxNode *node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrow = (wxArrowHead *)node->Data();
switch (arrow->GetArrowEnd())
{
case ARROW_POSITION_START:
{
if ((arrow->GetXOffset() != 0.0) && !m_ignoreArrowOffsets)
// If specified, x offset is proportional to line length
DrawArrow(dc, arrow, arrow->GetXOffset(), TRUE);
else
{
DrawArrow(dc, arrow, startArrowPos, FALSE); // Absolute distance
startArrowPos += arrow->GetSize() + arrow->GetSpacing();
}
break;
}
case ARROW_POSITION_END:
{
if ((arrow->GetXOffset() != 0.0) && !m_ignoreArrowOffsets)
DrawArrow(dc, arrow, arrow->GetXOffset(), TRUE);
else
{
DrawArrow(dc, arrow, endArrowPos, FALSE);
endArrowPos += arrow->GetSize() + arrow->GetSpacing();
}
break;
}
case ARROW_POSITION_MIDDLE:
{
arrow->SetXOffset(middleArrowPos);
if ((arrow->GetXOffset() != 0.0) && !m_ignoreArrowOffsets)
DrawArrow(dc, arrow, arrow->GetXOffset(), TRUE);
else
{
DrawArrow(dc, arrow, middleArrowPos, FALSE);
middleArrowPos += arrow->GetSize() + arrow->GetSpacing();
}
break;
}
}
node = node->Next();
}
}
void wxLineShape::DrawArrow(wxDC& dc, wxArrowHead *arrow, double xOffset, bool proportionalOffset)
{
wxNode *first_line_node = m_lineControlPoints->First();
wxRealPoint *first_line_point = (wxRealPoint *)first_line_node->Data();
wxNode *second_line_node = first_line_node->Next();
wxRealPoint *second_line_point = (wxRealPoint *)second_line_node->Data();
wxNode *last_line_node = m_lineControlPoints->Last();
wxRealPoint *last_line_point = (wxRealPoint *)last_line_node->Data();
wxNode *second_last_line_node = last_line_node->Previous();
wxRealPoint *second_last_line_point = (wxRealPoint *)second_last_line_node->Data();
// Position where we want to start drawing
double positionOnLineX, positionOnLineY;
// Position of start point of line, at the end of which we draw the arrow.
double startPositionX, startPositionY;
switch (arrow->GetPosition())
{
case ARROW_POSITION_START:
{
// If we're using a proportional offset, calculate just where this will
// be on the line.
double realOffset = xOffset;
if (proportionalOffset)
{
double totalLength =
(double)sqrt((second_line_point->x - first_line_point->x)*(second_line_point->x - first_line_point->x) +
(second_line_point->y - first_line_point->y)*(second_line_point->y - first_line_point->y));
realOffset = (double)(xOffset * totalLength);
}
GetPointOnLine(second_line_point->x, second_line_point->y,
first_line_point->x, first_line_point->y,
realOffset, &positionOnLineX, &positionOnLineY);
startPositionX = second_line_point->x;
startPositionY = second_line_point->y;
break;
}
case ARROW_POSITION_END:
{
// If we're using a proportional offset, calculate just where this will
// be on the line.
double realOffset = xOffset;
if (proportionalOffset)
{
double totalLength =
(double)sqrt((second_last_line_point->x - last_line_point->x)*(second_last_line_point->x - last_line_point->x) +
(second_last_line_point->y - last_line_point->y)*(second_last_line_point->y - last_line_point->y));
realOffset = (double)(xOffset * totalLength);
}
GetPointOnLine(second_last_line_point->x, second_last_line_point->y,
last_line_point->x, last_line_point->y,
realOffset, &positionOnLineX, &positionOnLineY);
startPositionX = second_last_line_point->x;
startPositionY = second_last_line_point->y;
break;
}
case ARROW_POSITION_MIDDLE:
{
// Choose a point half way between the last and penultimate points
double x = ((last_line_point->x + second_last_line_point->x)/2);
double y = ((last_line_point->y + second_last_line_point->y)/2);
// If we're using a proportional offset, calculate just where this will
// be on the line.
double realOffset = xOffset;
if (proportionalOffset)
{
double totalLength =
(double)sqrt((second_last_line_point->x - x)*(second_last_line_point->x - x) +
(second_last_line_point->y - y)*(second_last_line_point->y - y));
realOffset = (double)(xOffset * totalLength);
}
GetPointOnLine(second_last_line_point->x, second_last_line_point->y,
x, y, realOffset, &positionOnLineX, &positionOnLineY);
startPositionX = second_last_line_point->x;
startPositionY = second_last_line_point->y;
break;
}
}
/*
* Add yOffset to arrow, if any
*/
const double myPi = (double) 3.14159265;
// The translation that the y offset may give
double deltaX = 0.0;
double deltaY = 0.0;
if ((arrow->GetYOffset() != 0.0) && !m_ignoreArrowOffsets)
{
/*
|(x4, y4)
|d
|
(x1, y1)--------------(x3, y3)------------------(x2, y2)
x4 = x3 - d * sin(theta)
y4 = y3 + d * cos(theta)
Where theta = tan(-1) of (y3-y1)/(x3-x1)
*/
double x1 = startPositionX;
double y1 = startPositionY;
double x3 = positionOnLineX;
double y3 = positionOnLineY;
double d = -arrow->GetYOffset(); // Negate so +offset is above line
double theta = 0.0;
if (x3 == x1)
theta = (double)(myPi/2.0);
else
theta = (double)atan((y3-y1)/(x3-x1));
double x4 = (double)(x3 - (d*sin(theta)));
double y4 = (double)(y3 + (d*cos(theta)));
deltaX = x4 - positionOnLineX;
deltaY = y4 - positionOnLineY;
}
switch (arrow->_GetType())
{
case ARROW_ARROW:
{
double arrowLength = arrow->GetSize();
double arrowWidth = (double)(arrowLength/3.0);
double tip_x, tip_y, side1_x, side1_y, side2_x, side2_y;
oglGetArrowPoints(startPositionX+deltaX, startPositionY+deltaY,
positionOnLineX+deltaX, positionOnLineY+deltaY,
arrowLength, arrowWidth, &tip_x, &tip_y,
&side1_x, &side1_y, &side2_x, &side2_y);
wxPoint points[4];
points[0].x = (int) tip_x; points[0].y = (int) tip_y;
points[1].x = (int) side1_x; points[1].y = (int) side1_y;
points[2].x = (int) side2_x; points[2].y = (int) side2_y;
points[3].x = (int) tip_x; points[3].y = (int) tip_y;
dc.SetPen(* m_pen);
dc.SetBrush(* m_brush);
dc.DrawPolygon(4, points);
break;
}
case ARROW_HOLLOW_CIRCLE:
case ARROW_FILLED_CIRCLE:
{
// Find point on line of centre of circle, which is a radius away
// from the end position
double diameter = (double)(arrow->GetSize());
double x, y;
GetPointOnLine(startPositionX+deltaX, startPositionY+deltaY,
positionOnLineX+deltaX, positionOnLineY+deltaY,
(double)(diameter/2.0),
&x, &y);
// Convert ellipse centre to top-left coordinates
double x1 = (double)(x - (diameter/2.0));
double y1 = (double)(y - (diameter/2.0));
dc.SetPen(* m_pen);
if (arrow->_GetType() == ARROW_HOLLOW_CIRCLE)
dc.SetBrush(* g_oglWhiteBackgroundBrush);
else
dc.SetBrush(* m_brush);
dc.DrawEllipse((long) x1, (long) y1, (long) diameter, (long) diameter);
break;
}
case ARROW_SINGLE_OBLIQUE:
{
break;
}
case ARROW_METAFILE:
{
if (arrow->GetMetaFile())
{
// Find point on line of centre of object, which is a half-width away
// from the end position
/*
* width
* <-- start pos <-----><-- positionOnLineX
* _____
* --------------| x | <-- e.g. rectangular arrowhead
* -----
*/
double x, y;
GetPointOnLine(startPositionX, startPositionY,
positionOnLineX, positionOnLineY,
(double)(arrow->GetMetaFile()->m_width/2.0),
&x, &y);
// Calculate theta for rotating the metafile.
/*
|
| o(x2, y2) 'o' represents the arrowhead.
| /
| /
| /theta
| /(x1, y1)
|______________________
*/
double theta = 0.0;
double x1 = startPositionX;
double y1 = startPositionY;
double x2 = positionOnLineX;
double y2 = positionOnLineY;
if ((x1 == x2) && (y1 == y2))
theta = 0.0;
else if ((x1 == x2) && (y1 > y2))
theta = (double)(3.0*myPi/2.0);
else if ((x1 == x2) && (y2 > y1))
theta = (double)(myPi/2.0);
else if ((x2 > x1) && (y2 >= y1))
theta = (double)atan((y2 - y1)/(x2 - x1));
else if (x2 < x1)
theta = (double)(myPi + atan((y2 - y1)/(x2 - x1)));
else if ((x2 > x1) && (y2 < y1))
theta = (double)(2*myPi + atan((y2 - y1)/(x2 - x1)));
else
{
wxLogFatalError(wxT("Unknown arrowhead rotation case in lines.cc"));
}
// Rotate about the centre of the object, then place
// the object on the line.
if (arrow->GetMetaFile()->GetRotateable())
arrow->GetMetaFile()->Rotate(0.0, 0.0, theta);
if (m_erasing)
{
// If erasing, just draw a rectangle.
double minX, minY, maxX, maxY;
arrow->GetMetaFile()->GetBounds(&minX, &minY, &maxX, &maxY);
// Make erasing rectangle slightly bigger or you get droppings.
int extraPixels = 4;
dc.DrawRectangle((long)(deltaX + x + minX - (extraPixels/2.0)), (long)(deltaY + y + minY - (extraPixels/2.0)),
(long)(maxX - minX + extraPixels), (long)(maxY - minY + extraPixels));
}
else
arrow->GetMetaFile()->Draw(dc, x+deltaX, y+deltaY);
}
break;
}
default:
{
}
}
}
void wxLineShape::OnErase(wxDC& dc)
{
wxPen *old_pen = m_pen;
wxBrush *old_brush = m_brush;
wxPen bg_pen = GetBackgroundPen();
wxBrush bg_brush = GetBackgroundBrush();
SetPen(&bg_pen);
SetBrush(&bg_brush);
double bound_x, bound_y;
GetBoundingBoxMax(&bound_x, &bound_y);
if (m_font) dc.SetFont(* m_font);
// Undraw text regions
for (int i = 0; i < 3; i++)
{
wxNode *node = m_regions.Nth(i);
if (node)
{
double x, y;
wxShapeRegion *region = (wxShapeRegion *)node->Data();
GetLabelPosition(i, &x, &y);
EraseRegion(dc, region, x, y);
}
}
// Undraw line
dc.SetPen(GetBackgroundPen());
dc.SetBrush(GetBackgroundBrush());
// Drawing over the line only seems to work if the line has a thickness
// of 1.
if (old_pen && (old_pen->GetWidth() > 1))
{
dc.DrawRectangle((long)(m_xpos - (bound_x/2.0) - 2.0), (long)(m_ypos - (bound_y/2.0) - 2.0),
(long)(bound_x+4.0), (long)(bound_y+4.0));
}
else
{
m_erasing = TRUE;
GetEventHandler()->OnDraw(dc);
GetEventHandler()->OnEraseControlPoints(dc);
m_erasing = FALSE;
}
if (old_pen) SetPen(old_pen);
if (old_brush) SetBrush(old_brush);
}
void wxLineShape::GetBoundingBoxMin(double *w, double *h)
{
double x1 = 10000;
double y1 = 10000;
double x2 = -10000;
double y2 = -10000;
wxNode *node = m_lineControlPoints->First();
while (node)
{
wxRealPoint *point = (wxRealPoint *)node->Data();
if (point->x < x1) x1 = point->x;
if (point->y < y1) y1 = point->y;
if (point->x > x2) x2 = point->x;
if (point->y > y2) y2 = point->y;
node = node->Next();
}
*w = (double)(x2 - x1);
*h = (double)(y2 - y1);
}
/*
* For a node image of interest, finds the position of this arc
* amongst all the arcs which are attached to THIS SIDE of the node image,
* and the number of same.
*/
void wxLineShape::FindNth(wxShape *image, int *nth, int *no_arcs, bool incoming)
{
int n = -1;
int num = 0;
wxNode *node = image->GetLines().First();
int this_attachment;
if (image == m_to)
this_attachment = m_attachmentTo;
else
this_attachment = m_attachmentFrom;
// Find number of lines going into/out of this particular attachment point
while (node)
{
wxLineShape *line = (wxLineShape *)node->Data();
if (line->m_from == image)
{
// This is the nth line attached to 'image'
if ((line == this) && !incoming)
n = num;
// Increment num count if this is the same side (attachment number)
if (line->m_attachmentFrom == this_attachment)
num ++;
}
if (line->m_to == image)
{
// This is the nth line attached to 'image'
if ((line == this) && incoming)
n = num;
// Increment num count if this is the same side (attachment number)
if (line->m_attachmentTo == this_attachment)
num ++;
}
node = node->Next();
}
*nth = n;
*no_arcs = num;
}
void wxLineShape::OnDrawOutline(wxDC& dc, double x, double y, double w, double h)
{
wxPen *old_pen = m_pen;
wxBrush *old_brush = m_brush;
wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
SetPen(& dottedPen);
SetBrush( wxTRANSPARENT_BRUSH );
GetEventHandler()->OnDraw(dc);
if (old_pen) SetPen(old_pen);
else SetPen(NULL);
if (old_brush) SetBrush(old_brush);
else SetBrush(NULL);
}
bool wxLineShape::OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display)
{
double x_offset = x - old_x;
double y_offset = y - old_y;
if (m_lineControlPoints && !(x_offset == 0.0 && y_offset == 0.0))
{
wxNode *node = m_lineControlPoints->First();
while (node)
{
wxRealPoint *point = (wxRealPoint *)node->Data();
point->x += x_offset;
point->y += y_offset;
node = node->Next();
}
}
// Move temporary label rectangles if necessary
for (int i = 0; i < 3; i++)
{
if (m_labelObjects[i])
{
m_labelObjects[i]->Erase(dc);
double xp, yp, xr, yr;
GetLabelPosition(i, &xp, &yp);
wxNode *node = m_regions.Nth(i);
if (node)
{
wxShapeRegion *region = (wxShapeRegion *)node->Data();
region->GetPosition(&xr, &yr);
}
else
{
xr = 0.0; yr = 0.0;
}
m_labelObjects[i]->Move(dc, xp+xr, yp+yr);
}
}
return TRUE;
}
void wxLineShape::OnMoveLink(wxDC& dc, bool moveControlPoints)
{
if (!m_from || !m_to)
return;
if (m_lineControlPoints->Number() > 2)
Initialise();
// Do each end - nothing in the middle. User has to move other points
// manually if necessary.
double end_x, end_y;
double other_end_x, other_end_y;
FindLineEndPoints(&end_x, &end_y, &other_end_x, &other_end_y);
wxNode *first = m_lineControlPoints->First();
wxRealPoint *first_point = (wxRealPoint *)first->Data();
wxNode *last = m_lineControlPoints->Last();
wxRealPoint *last_point = (wxRealPoint *)last->Data();
/* This is redundant, surely? Done by SetEnds.
first_point->x = end_x; first_point->y = end_y;
last_point->x = other_end_x; last_point->y = other_end_y;
*/
double oldX = m_xpos;
double oldY = m_ypos;
SetEnds(end_x, end_y, other_end_x, other_end_y);
// Do a second time, because one may depend on the other.
FindLineEndPoints(&end_x, &end_y, &other_end_x, &other_end_y);
SetEnds(end_x, end_y, other_end_x, other_end_y);
// Try to move control points with the arc
double x_offset = m_xpos - oldX;
double y_offset = m_ypos - oldY;
// if (moveControlPoints && m_lineControlPoints && !(x_offset == 0.0 && y_offset == 0.0))
// Only move control points if it's a self link. And only works if attachment mode is ON.
if ((m_from == m_to) && (m_from->GetAttachmentMode() != ATTACHMENT_MODE_NONE) && moveControlPoints && m_lineControlPoints && !(x_offset == 0.0 && y_offset == 0.0))
{
wxNode *node = m_lineControlPoints->First();
while (node)
{
if ((node != m_lineControlPoints->First()) && (node != m_lineControlPoints->Last()))
{
wxRealPoint *point = (wxRealPoint *)node->Data();
point->x += x_offset;
point->y += y_offset;
}
node = node->Next();
}
}
Move(dc, m_xpos, m_ypos);
}
// Finds the x, y points at the two ends of the line.
// This function can be used by e.g. line-routing routines to
// get the actual points on the two node images where the lines will be drawn
// to/from.
void wxLineShape::FindLineEndPoints(double *fromX, double *fromY, double *toX, double *toY)
{
if (!m_from || !m_to)
return;
// Do each end - nothing in the middle. User has to move other points
// manually if necessary.
double end_x, end_y;
double other_end_x, other_end_y;
wxNode *first = m_lineControlPoints->First();
wxRealPoint *first_point = (wxRealPoint *)first->Data();
wxNode *last = m_lineControlPoints->Last();
wxRealPoint *last_point = (wxRealPoint *)last->Data();
wxNode *second = first->Next();
wxRealPoint *second_point = (wxRealPoint *)second->Data();
wxNode *second_last = last->Previous();
wxRealPoint *second_last_point = (wxRealPoint *)second_last->Data();
if (m_lineControlPoints->Number() > 2)
{
if (m_from->GetAttachmentMode() != ATTACHMENT_MODE_NONE)
{
int nth, no_arcs;
FindNth(m_from, &nth, &no_arcs, FALSE); // Not incoming
m_from->GetAttachmentPosition(m_attachmentFrom, &end_x, &end_y, nth, no_arcs, this);
}
else
(void) m_from->GetPerimeterPoint(m_from->GetX(), m_from->GetY(),
(double)second_point->x, (double)second_point->y,
&end_x, &end_y);
if (m_to->GetAttachmentMode() != ATTACHMENT_MODE_NONE)
{
int nth, no_arcs;
FindNth(m_to, &nth, &no_arcs, TRUE); // Incoming
m_to->GetAttachmentPosition(m_attachmentTo, &other_end_x, &other_end_y, nth, no_arcs, this);
}
else
(void) m_to->GetPerimeterPoint(m_to->GetX(), m_to->GetY(),
(double)second_last_point->x, (double)second_last_point->y,
&other_end_x, &other_end_y);
}
else
{
double fromX = m_from->GetX();
double fromY = m_from->GetY();
double toX = m_to->GetX();
double toY = m_to->GetY();
if (m_from->GetAttachmentMode() != ATTACHMENT_MODE_NONE)
{
int nth, no_arcs;
FindNth(m_from, &nth, &no_arcs, FALSE);
m_from->GetAttachmentPosition(m_attachmentFrom, &end_x, &end_y, nth, no_arcs, this);
fromX = end_x;
fromY = end_y;
}
if (m_to->GetAttachmentMode() != ATTACHMENT_MODE_NONE)
{
int nth, no_arcs;
FindNth(m_to, &nth, &no_arcs, TRUE);
m_to->GetAttachmentPosition(m_attachmentTo, &other_end_x, &other_end_y, nth, no_arcs, this);
toX = other_end_x;
toY = other_end_y;
}
if (m_from->GetAttachmentMode() == ATTACHMENT_MODE_NONE)
(void) m_from->GetPerimeterPoint(m_from->GetX(), m_from->GetY(),
toX, toY,
&end_x, &end_y);
if (m_to->GetAttachmentMode() == ATTACHMENT_MODE_NONE)
(void) m_to->GetPerimeterPoint(m_to->GetX(), m_to->GetY(),
fromX, fromY,
&other_end_x, &other_end_y);
}
*fromX = end_x;
*fromY = end_y;
*toX = other_end_x;
*toY = other_end_y;
}
void wxLineShape::OnDraw(wxDC& dc)
{
if (m_lineControlPoints)
{
if (m_pen)
dc.SetPen(* m_pen);
if (m_brush)
dc.SetBrush(* m_brush);
int n = m_lineControlPoints->Number();
wxPoint *points = new wxPoint[n];
int i;
for (i = 0; i < n; i++)
{
wxRealPoint* point = (wxRealPoint*) m_lineControlPoints->Nth(i)->Data();
points[i].x = WXROUND(point->x);
points[i].y = WXROUND(point->y);
}
if (m_isSpline)
dc.DrawSpline(n, points);
else
dc.DrawLines(n, points);
#ifdef __WXMSW__
// For some reason, last point isn't drawn under Windows.
dc.DrawPoint(points[n-1]);
#endif
delete[] points;
// Problem with pen - if not a solid pen, does strange things
// to the arrowhead. So make (get) a new pen that's solid.
if (m_pen && (m_pen->GetStyle() != wxSOLID))
{
wxPen *solid_pen =
wxThePenList->FindOrCreatePen(m_pen->GetColour(), 1, wxSOLID);
if (solid_pen)
dc.SetPen(* solid_pen);
}
DrawArrows(dc);
}
}
void wxLineShape::OnDrawControlPoints(wxDC& dc)
{
if (!m_drawHandles)
return;
// Draw temporary label rectangles if necessary
for (int i = 0; i < 3; i++)
{
if (m_labelObjects[i])
m_labelObjects[i]->Draw(dc);
}
wxShape::OnDrawControlPoints(dc);
}
void wxLineShape::OnEraseControlPoints(wxDC& dc)
{
// Erase temporary label rectangles if necessary
for (int i = 0; i < 3; i++)
{
if (m_labelObjects[i])
m_labelObjects[i]->Erase(dc);
}
wxShape::OnEraseControlPoints(dc);
}
void wxLineShape::OnDragLeft(bool draw, double x, double y, int keys, int attachment)
{
}
void wxLineShape::OnBeginDragLeft(double x, double y, int keys, int attachment)
{
}
void wxLineShape::OnEndDragLeft(double x, double y, int keys, int attachment)
{
}
/*
void wxLineShape::SetArrowSize(double length, double width)
{
arrow_length = length;
arrow_width = width;
}
void wxLineShape::SetStartArrow(int style)
{
start_style = style;
}
void wxLineShape::SetMiddleArrow(int style)
{
middle_style = style;
}
void wxLineShape::SetEndArrow(int style)
{
end_style = style;
}
*/
void wxLineShape::OnDrawContents(wxDC& dc)
{
if (GetDisableLabel())
return;
for (int i = 0; i < 3; i++)
{
wxNode *node = m_regions.Nth(i);
if (node)
{
wxShapeRegion *region = (wxShapeRegion *)node->Data();
double x, y;
GetLabelPosition(i, &x, &y);
DrawRegion(dc, region, x, y);
}
}
}
void wxLineShape::SetTo(wxShape *object)
{
m_to = object;
}
void wxLineShape::SetFrom(wxShape *object)
{
m_from = object;
}
void wxLineShape::MakeControlPoints()
{
if (m_canvas && m_lineControlPoints)
{
wxNode *first = m_lineControlPoints->First();
wxNode *last = m_lineControlPoints->Last();
wxRealPoint *first_point = (wxRealPoint *)first->Data();
wxRealPoint *last_point = (wxRealPoint *)last->Data();
wxLineControlPoint *control = new wxLineControlPoint(m_canvas, this, CONTROL_POINT_SIZE,
first_point->x, first_point->y,
CONTROL_POINT_ENDPOINT_FROM);
control->m_point = first_point;
m_canvas->AddShape(control);
m_controlPoints.Append(control);
wxNode *node = first->Next();
while (node != last)
{
wxRealPoint *point = (wxRealPoint *)node->Data();
control = new wxLineControlPoint(m_canvas, this, CONTROL_POINT_SIZE,
point->x, point->y,
CONTROL_POINT_LINE);
control->m_point = point;
m_canvas->AddShape(control);
m_controlPoints.Append(control);
node = node->Next();
}
control = new wxLineControlPoint(m_canvas, this, CONTROL_POINT_SIZE,
last_point->x, last_point->y,
CONTROL_POINT_ENDPOINT_TO);
control->m_point = last_point;
m_canvas->AddShape(control);
m_controlPoints.Append(control);
}
}
void wxLineShape::ResetControlPoints()
{
if (m_canvas && m_lineControlPoints && m_controlPoints.Number() > 0)
{
wxNode *node = m_controlPoints.First();
wxNode *control_node = m_lineControlPoints->First();
while (node && control_node)
{
wxRealPoint *point = (wxRealPoint *)control_node->Data();
wxLineControlPoint *control = (wxLineControlPoint *)node->Data();
control->SetX(point->x);
control->SetY(point->y);
node = node->Next();
control_node = control_node->Next();
}
}
}
#if wxUSE_PROLOGIO
void wxLineShape::WriteAttributes(wxExpr *clause)
{
wxShape::WriteAttributes(clause);
if (m_from)
clause->AddAttributeValue("from", m_from->GetId());
if (m_to)
clause->AddAttributeValue("to", m_to->GetId());
if (m_attachmentTo != 0)
clause->AddAttributeValue("attachment_to", (long)m_attachmentTo);
if (m_attachmentFrom != 0)
clause->AddAttributeValue("attachment_from", (long)m_attachmentFrom);
if (m_alignmentStart != 0)
clause->AddAttributeValue("align_start", (long)m_alignmentStart);
if (m_alignmentEnd != 0)
clause->AddAttributeValue("align_end", (long)m_alignmentEnd);
clause->AddAttributeValue("is_spline", (long)m_isSpline);
if (m_maintainStraightLines)
clause->AddAttributeValue("keep_lines_straight", (long)m_maintainStraightLines);
// Make a list of lists for the (sp)line controls
wxExpr *list = new wxExpr(wxExprList);
wxNode *node = m_lineControlPoints->First();
while (node)
{
wxRealPoint *point = (wxRealPoint *)node->Data();
wxExpr *point_list = new wxExpr(wxExprList);
wxExpr *x_expr = new wxExpr((double) point->x);
wxExpr *y_expr = new wxExpr((double) point->y);
point_list->Append(x_expr);
point_list->Append(y_expr);
list->Append(point_list);
node = node->Next();
}
clause->AddAttributeValue("controls", list);
// Write arc arrows in new OGL format, if there are any.
// This is a list of lists. Each sublist comprises:
// (arrowType arrowEnd xOffset arrowSize)
if (m_arcArrows.Number() > 0)
{
wxExpr *arrow_list = new wxExpr(wxExprList);
node = m_arcArrows.First();
while (node)
{
wxArrowHead *head = (wxArrowHead *)node->Data();
wxExpr *head_list = new wxExpr(wxExprList);
head_list->Append(new wxExpr((long)head->_GetType()));
head_list->Append(new wxExpr((long)head->GetArrowEnd()));
head_list->Append(new wxExpr(head->GetXOffset()));
head_list->Append(new wxExpr(head->GetArrowSize()));
head_list->Append(new wxExpr(wxExprString, head->GetName()));
head_list->Append(new wxExpr(head->GetId()));
// New members of wxArrowHead
head_list->Append(new wxExpr(head->GetYOffset()));
head_list->Append(new wxExpr(head->GetSpacing()));
arrow_list->Append(head_list);
node = node->Next();
}
clause->AddAttributeValue("arrows", arrow_list);
}
}
void wxLineShape::ReadAttributes(wxExpr *clause)
{
wxShape::ReadAttributes(clause);
int iVal = (int) m_isSpline;
clause->AssignAttributeValue(wxT("is_spline"), &iVal);
m_isSpline = (iVal != 0);
iVal = (int) m_maintainStraightLines;
clause->AssignAttributeValue(wxT("keep_lines_straight"), &iVal);
m_maintainStraightLines = (iVal != 0);
clause->AssignAttributeValue(wxT("align_start"), &m_alignmentStart);
clause->AssignAttributeValue(wxT("align_end"), &m_alignmentEnd);
// Compatibility: check for no regions.
if (m_regions.Number() == 0)
{
wxShapeRegion *newRegion = new wxShapeRegion;
newRegion->SetName("Middle");
newRegion->SetSize(150, 50);
m_regions.Append((wxObject *)newRegion);
if (m_text.Number() > 0)
{
newRegion->ClearText();
wxNode *node = m_text.First();
while (node)
{
wxShapeTextLine *textLine = (wxShapeTextLine *)node->Data();
wxNode *next = node->Next();
newRegion->GetFormattedText().Append((wxObject *)textLine);
delete node;
node = next;
}
}
newRegion = new wxShapeRegion;
newRegion->SetName(wxT("Start"));
newRegion->SetSize(150, 50);
m_regions.Append((wxObject *)newRegion);
newRegion = new wxShapeRegion;
newRegion->SetName(wxT("End"));
newRegion->SetSize(150, 50);
m_regions.Append((wxObject *)newRegion);
}
m_attachmentTo = 0;
m_attachmentFrom = 0;
clause->AssignAttributeValue(wxT("attachment_to"), &m_attachmentTo);
clause->AssignAttributeValue(wxT("attachment_from"), &m_attachmentFrom);
wxExpr *line_list = NULL;
// When image is created, there are default control points. Override
// them if there are some in the file.
clause->AssignAttributeValue(wxT("controls"), &line_list);
if (line_list)
{
// Read a list of lists for the spline controls
if (m_lineControlPoints)
{
ClearPointList(*m_lineControlPoints);
}
else
m_lineControlPoints = new wxList;
wxExpr *node = line_list->value.first;
while (node)
{
wxExpr *xexpr = node->value.first;
double x = xexpr->RealValue();
wxExpr *yexpr = xexpr->next;
double y = yexpr->RealValue();
wxRealPoint *point = new wxRealPoint(x, y);
m_lineControlPoints->Append((wxObject*) point);
node = node->next;
}
}
// Read arrow list, for new OGL code
wxExpr *arrow_list = NULL;
clause->AssignAttributeValue(wxT("arrows"), &arrow_list);
if (arrow_list)
{
wxExpr *node = arrow_list->value.first;
while (node)
{
WXTYPE arrowType = ARROW_ARROW;
int arrowEnd = 0;
double xOffset = 0.0;
double arrowSize = 0.0;
wxString arrowName;
long arrowId = -1;
wxExpr *type_expr = node->Nth(0);
wxExpr *end_expr = node->Nth(1);
wxExpr *dist_expr = node->Nth(2);
wxExpr *size_expr = node->Nth(3);
wxExpr *name_expr = node->Nth(4);
wxExpr *id_expr = node->Nth(5);
// New members of wxArrowHead
wxExpr *yOffsetExpr = node->Nth(6);
wxExpr *spacingExpr = node->Nth(7);
if (type_expr)
arrowType = (int)type_expr->IntegerValue();
if (end_expr)
arrowEnd = (int)end_expr->IntegerValue();
if (dist_expr)
xOffset = dist_expr->RealValue();
if (size_expr)
arrowSize = size_expr->RealValue();
if (name_expr)
arrowName = name_expr->StringValue();
if (id_expr)
arrowId = id_expr->IntegerValue();
if (arrowId == -1)
arrowId = wxNewId();
else
wxRegisterId(arrowId);
wxArrowHead *arrowHead = AddArrow(arrowType, arrowEnd, arrowSize, xOffset, arrowName, NULL, arrowId);
if (yOffsetExpr)
arrowHead->SetYOffset(yOffsetExpr->RealValue());
if (spacingExpr)
arrowHead->SetSpacing(spacingExpr->RealValue());
node = node->next;
}
}
}
#endif
void wxLineShape::Copy(wxShape& copy)
{
wxShape::Copy(copy);
wxASSERT( copy.IsKindOf(CLASSINFO(wxLineShape)) );
wxLineShape& lineCopy = (wxLineShape&) copy;
lineCopy.m_to = m_to;
lineCopy.m_from = m_from;
lineCopy.m_attachmentTo = m_attachmentTo;
lineCopy.m_attachmentFrom = m_attachmentFrom;
lineCopy.m_isSpline = m_isSpline;
lineCopy.m_alignmentStart = m_alignmentStart;
lineCopy.m_alignmentEnd = m_alignmentEnd;
lineCopy.m_maintainStraightLines = m_maintainStraightLines;
lineCopy.m_lineOrientations.Clear();
wxNode *node = m_lineOrientations.First();
while (node)
{
lineCopy.m_lineOrientations.Append(node->Data());
node = node->Next();
}
if (lineCopy.m_lineControlPoints)
{
ClearPointList(*lineCopy.m_lineControlPoints);
delete lineCopy.m_lineControlPoints;
}
lineCopy.m_lineControlPoints = new wxList;
node = m_lineControlPoints->First();
while (node)
{
wxRealPoint *point = (wxRealPoint *)node->Data();
wxRealPoint *new_point = new wxRealPoint(point->x, point->y);
lineCopy.m_lineControlPoints->Append((wxObject*) new_point);
node = node->Next();
}
// Copy arrows
lineCopy.ClearArrowsAtPosition(-1);
node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrow = (wxArrowHead *)node->Data();
lineCopy.m_arcArrows.Append(new wxArrowHead(*arrow));
node = node->Next();
}
}
// Override select, to create/delete temporary label-moving objects
void wxLineShape::Select(bool select, wxDC* dc)
{
wxShape::Select(select, dc);
if (select)
{
for (int i = 0; i < 3; i++)
{
wxNode *node = m_regions.Nth(i);
if (node)
{
wxShapeRegion *region = (wxShapeRegion *)node->Data();
if (region->m_formattedText.Number() > 0)
{
double w, h, x, y, xx, yy;
region->GetSize(&w, &h);
region->GetPosition(&x, &y);
GetLabelPosition(i, &xx, &yy);
if (m_labelObjects[i])
{
m_labelObjects[i]->Select(FALSE);
m_labelObjects[i]->RemoveFromCanvas(m_canvas);
delete m_labelObjects[i];
}
m_labelObjects[i] = OnCreateLabelShape(this, region, w, h);
m_labelObjects[i]->AddToCanvas(m_canvas);
m_labelObjects[i]->Show(TRUE);
if (dc)
m_labelObjects[i]->Move(*dc, (double)(x + xx), (double)(y + yy));
m_labelObjects[i]->Select(TRUE, dc);
}
}
}
}
else
{
for (int i = 0; i < 3; i++)
{
if (m_labelObjects[i])
{
m_labelObjects[i]->Select(FALSE, dc);
m_labelObjects[i]->Erase(*dc);
m_labelObjects[i]->RemoveFromCanvas(m_canvas);
delete m_labelObjects[i];
m_labelObjects[i] = NULL;
}
}
}
}
/*
* Line control point
*
*/
IMPLEMENT_DYNAMIC_CLASS(wxLineControlPoint, wxControlPoint)
wxLineControlPoint::wxLineControlPoint(wxShapeCanvas *theCanvas, wxShape *object, double size, double x, double y, int the_type):
wxControlPoint(theCanvas, object, size, x, y, the_type)
{
m_xpos = x;
m_ypos = y;
m_type = the_type;
m_point = NULL;
}
wxLineControlPoint::~wxLineControlPoint()
{
}
void wxLineControlPoint::OnDraw(wxDC& dc)
{
wxRectangleShape::OnDraw(dc);
}
// Implement movement of Line point
void wxLineControlPoint::OnDragLeft(bool draw, double x, double y, int keys, int attachment)
{
m_shape->GetEventHandler()->OnSizingDragLeft(this, draw, x, y, keys, attachment);
}
void wxLineControlPoint::OnBeginDragLeft(double x, double y, int keys, int attachment)
{
m_shape->GetEventHandler()->OnSizingBeginDragLeft(this, x, y, keys, attachment);
}
void wxLineControlPoint::OnEndDragLeft(double x, double y, int keys, int attachment)
{
m_shape->GetEventHandler()->OnSizingEndDragLeft(this, x, y, keys, attachment);
}
// Control points ('handles') redirect control to the actual shape, to make it easier
// to override sizing behaviour.
void wxLineShape::OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys, int attachment)
{
wxLineControlPoint* lpt = (wxLineControlPoint*) pt;
wxClientDC dc(GetCanvas());
GetCanvas()->PrepareDC(dc);
dc.SetLogicalFunction(OGLRBLF);
wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
dc.SetPen(dottedPen);
dc.SetBrush((* wxTRANSPARENT_BRUSH));
if (lpt->m_type == CONTROL_POINT_LINE)
{
m_canvas->Snap(&x, &y);
lpt->SetX(x); lpt->SetY(y);
lpt->m_point->x = x; lpt->m_point->y = y;
wxLineShape *lineShape = (wxLineShape *)this;
wxPen *old_pen = lineShape->GetPen();
wxBrush *old_brush = lineShape->GetBrush();
wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
lineShape->SetPen(& dottedPen);
lineShape->SetBrush(wxTRANSPARENT_BRUSH);
lineShape->GetEventHandler()->OnMoveLink(dc, FALSE);
lineShape->SetPen(old_pen);
lineShape->SetBrush(old_brush);
}
if (lpt->m_type == CONTROL_POINT_ENDPOINT_FROM || lpt->m_type == CONTROL_POINT_ENDPOINT_TO)
{
// lpt->SetX(x); lpt->SetY(y);
}
}
void wxLineShape::OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys, int attachment)
{
wxLineControlPoint* lpt = (wxLineControlPoint*) pt;
wxClientDC dc(GetCanvas());
GetCanvas()->PrepareDC(dc);
wxLineShape *lineShape = (wxLineShape *)this;
if (lpt->m_type == CONTROL_POINT_LINE)
{
lpt->m_originalPos = * (lpt->m_point);
m_canvas->Snap(&x, &y);
this->Erase(dc);
// Redraw start and end objects because we've left holes
// when erasing the line
lineShape->GetFrom()->OnDraw(dc);
lineShape->GetFrom()->OnDrawContents(dc);
lineShape->GetTo()->OnDraw(dc);
lineShape->GetTo()->OnDrawContents(dc);
this->SetDisableLabel(TRUE);
dc.SetLogicalFunction(OGLRBLF);
lpt->m_xpos = x; lpt->m_ypos = y;
lpt->m_point->x = x; lpt->m_point->y = y;
wxPen *old_pen = lineShape->GetPen();
wxBrush *old_brush = lineShape->GetBrush();
wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
lineShape->SetPen(& dottedPen);
lineShape->SetBrush(wxTRANSPARENT_BRUSH);
lineShape->GetEventHandler()->OnMoveLink(dc, FALSE);
lineShape->SetPen(old_pen);
lineShape->SetBrush(old_brush);
}
if (lpt->m_type == CONTROL_POINT_ENDPOINT_FROM || lpt->m_type == CONTROL_POINT_ENDPOINT_TO)
{
m_canvas->SetCursor(wxCursor(wxCURSOR_BULLSEYE));
lpt->m_oldCursor = wxSTANDARD_CURSOR;
}
}
void wxLineShape::OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys, int attachment)
{
wxLineControlPoint* lpt = (wxLineControlPoint*) pt;
wxClientDC dc(GetCanvas());
GetCanvas()->PrepareDC(dc);
this->SetDisableLabel(FALSE);
wxLineShape *lineShape = (wxLineShape *)this;
if (lpt->m_type == CONTROL_POINT_LINE)
{
m_canvas->Snap(&x, &y);
wxRealPoint pt = wxRealPoint(x, y);
// Move the control point back to where it was;
// MoveControlPoint will move it to the new position
// if it decides it wants. We only moved the position
// during user feedback so we could redraw the line
// as it changed shape.
lpt->m_xpos = lpt->m_originalPos.x; lpt->m_ypos = lpt->m_originalPos.y;
lpt->m_point->x = lpt->m_originalPos.x; lpt->m_point->y = lpt->m_originalPos.y;
OnMoveMiddleControlPoint(dc, lpt, pt);
}
if (lpt->m_type == CONTROL_POINT_ENDPOINT_FROM)
{
if (lpt->m_oldCursor)
m_canvas->SetCursor(* lpt->m_oldCursor);
// this->Erase(dc);
// lpt->m_xpos = x; lpt->m_ypos = y;
if (lineShape->GetFrom())
{
lineShape->GetFrom()->MoveLineToNewAttachment(dc, lineShape, x, y);
}
}
if (lpt->m_type == CONTROL_POINT_ENDPOINT_TO)
{
if (lpt->m_oldCursor)
m_canvas->SetCursor(* lpt->m_oldCursor);
// lpt->m_xpos = x; lpt->m_ypos = y;
if (lineShape->GetTo())
{
lineShape->GetTo()->MoveLineToNewAttachment(dc, lineShape, x, y);
}
}
// Needed?
#if 0
int i = 0;
for (i = 0; i < lineShape->GetLineControlPoints()->Number(); i++)
if (((wxRealPoint *)(lineShape->GetLineControlPoints()->Nth(i)->Data())) == lpt->m_point)
break;
// N.B. in OnMoveControlPoint, an event handler in Hardy could have deselected
// the line and therefore deleted 'this'. -> GPF, intermittently.
// So assume at this point that we've been blown away.
lineShape->OnMoveControlPoint(i+1, x, y);
#endif
}
// This is called only when a non-end control point is moved.
bool wxLineShape::OnMoveMiddleControlPoint(wxDC& dc, wxLineControlPoint* lpt, const wxRealPoint& pt)
{
lpt->m_xpos = pt.x; lpt->m_ypos = pt.y;
lpt->m_point->x = pt.x; lpt->m_point->y = pt.y;
GetEventHandler()->OnMoveLink(dc);
return TRUE;
}
// Implement movement of endpoint to a new attachment
// OBSOLETE: done by dragging with the left button.
#if 0
void wxLineControlPoint::OnDragRight(bool draw, double x, double y, int keys, int attachment)
{
if (m_type == CONTROL_POINT_ENDPOINT_FROM || m_type == CONTROL_POINT_ENDPOINT_TO)
{
m_xpos = x; m_ypos = y;
}
}
void wxLineControlPoint::OnBeginDragRight(double x, double y, int keys, int attachment)
{
wxClientDC dc(GetCanvas());
GetCanvas()->PrepareDC(dc);
wxLineShape *lineShape = (wxLineShape *)m_shape;
if (m_type == CONTROL_POINT_ENDPOINT_FROM || m_type == CONTROL_POINT_ENDPOINT_TO)
{
Erase(dc);
lineShape->GetEventHandler()->OnDraw(dc);
if (m_type == CONTROL_POINT_ENDPOINT_FROM)
{
lineShape->GetFrom()->GetEventHandler()->OnDraw(dc);
lineShape->GetFrom()->GetEventHandler()->OnDrawContents(dc);
}
else
{
lineShape->GetTo()->GetEventHandler()->OnDraw(dc);
lineShape->GetTo()->GetEventHandler()->OnDrawContents(dc);
}
m_canvas->SetCursor(wxCursor(wxCURSOR_BULLSEYE));
m_oldCursor = wxSTANDARD_CURSOR;
}
}
void wxLineControlPoint::OnEndDragRight(double x, double y, int keys, int attachment)
{
wxClientDC dc(GetCanvas());
GetCanvas()->PrepareDC(dc);
wxLineShape *lineShape = (wxLineShape *)m_shape;
if (m_type == CONTROL_POINT_ENDPOINT_FROM)
{
if (m_oldCursor)
m_canvas->SetCursor(m_oldCursor);
m_xpos = x; m_ypos = y;
if (lineShape->GetFrom())
{
lineShape->GetFrom()->EraseLinks(dc);
int new_attachment;
double distance;
if (lineShape->GetFrom()->HitTest(x, y, &new_attachment, &distance))
lineShape->SetAttachments(new_attachment, lineShape->GetAttachmentTo());
lineShape->GetFrom()->MoveLinks(dc);
}
}
if (m_type == CONTROL_POINT_ENDPOINT_TO)
{
if (m_oldCursor)
m_canvas->SetCursor(m_oldCursor);
m_shape->Erase(dc);
m_xpos = x; m_ypos = y;
if (lineShape->GetTo())
{
lineShape->GetTo()->EraseLinks(dc);
int new_attachment;
double distance;
if (lineShape->GetTo()->HitTest(x, y, &new_attachment, &distance))
lineShape->SetAttachments(lineShape->GetAttachmentFrom(), new_attachment);
lineShape->GetTo()->MoveLinks(dc);
}
}
int i = 0;
for (i = 0; i < lineShape->GetLineControlPoints()->Number(); i++)
if (((wxRealPoint *)(lineShape->GetLineControlPoints()->Nth(i)->Data())) == m_point)
break;
lineShape->OnMoveControlPoint(i+1, x, y);
if (!m_canvas->GetQuickEditMode()) m_canvas->Redraw(dc);
}
#endif
/*
* Get the point on the given line (x1, y1) (x2, y2)
* distance 'length' along from the end,
* returned values in x and y
*/
void GetPointOnLine(double x1, double y1, double x2, double y2,
double length, double *x, double *y)
{
double l = (double)sqrt((x2 - x1)*(x2 - x1) + (y2 - y1)*(y2 - y1));
if (l < 0.01)
l = (double) 0.01;
double i_bar = (x2 - x1)/l;
double j_bar = (y2 - y1)/l;
*x = (- length*i_bar) + x2;
*y = (- length*j_bar) + y2;
}
wxArrowHead *wxLineShape::AddArrow(WXTYPE type, int end, double size, double xOffset,
const wxString& name, wxPseudoMetaFile *mf, long arrowId)
{
wxArrowHead *arrow = new wxArrowHead(type, end, size, xOffset, name, mf, arrowId);
m_arcArrows.Append(arrow);
return arrow;
}
/*
* Add arrowhead at a particular position in the arrowhead list.
*/
bool wxLineShape::AddArrowOrdered(wxArrowHead *arrow, wxList& referenceList, int end)
{
wxNode *refNode = referenceList.First();
wxNode *currNode = m_arcArrows.First();
wxString targetName(arrow->GetName());
if (!refNode) return FALSE;
// First check whether we need to insert in front of list,
// because this arrowhead is the first in the reference
// list and should therefore be first in the current list.
wxArrowHead *refArrow = (wxArrowHead *)refNode->Data();
if (refArrow->GetName() == targetName)
{
m_arcArrows.Insert(arrow);
return TRUE;
}
while (refNode && currNode)
{
wxArrowHead *currArrow = (wxArrowHead *)currNode->Data();
refArrow = (wxArrowHead *)refNode->Data();
// Matching: advance current arrow pointer
if ((currArrow->GetArrowEnd() == end) &&
(currArrow->GetName() == refArrow->GetName()))
{
currNode = currNode->Next(); // Could be NULL now
if (currNode)
currArrow = (wxArrowHead *)currNode->Data();
}
// Check if we're at the correct position in the
// reference list
if (targetName == refArrow->GetName())
{
if (currNode)
m_arcArrows.Insert(currNode, arrow);
else
m_arcArrows.Append(arrow);
return TRUE;
}
refNode = refNode->Next();
}
m_arcArrows.Append(arrow);
return TRUE;
}
void wxLineShape::ClearArrowsAtPosition(int end)
{
wxNode *node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrow = (wxArrowHead *)node->Data();
wxNode *next = node->Next();
switch (end)
{
case -1:
{
delete arrow;
delete node;
break;
}
case ARROW_POSITION_START:
{
if (arrow->GetArrowEnd() == ARROW_POSITION_START)
{
delete arrow;
delete node;
}
break;
}
case ARROW_POSITION_END:
{
if (arrow->GetArrowEnd() == ARROW_POSITION_END)
{
delete arrow;
delete node;
}
break;
}
case ARROW_POSITION_MIDDLE:
{
if (arrow->GetArrowEnd() == ARROW_POSITION_MIDDLE)
{
delete arrow;
delete node;
}
break;
}
}
node = next;
}
}
bool wxLineShape::ClearArrow(const wxString& name)
{
wxNode *node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrow = (wxArrowHead *)node->Data();
if (arrow->GetName() == name)
{
delete arrow;
delete node;
return TRUE;
}
node = node->Next();
}
return FALSE;
}
/*
* Finds an arrowhead at the given position (if -1, any position)
*
*/
wxArrowHead *wxLineShape::FindArrowHead(int position, const wxString& name)
{
wxNode *node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrow = (wxArrowHead *)node->Data();
if (((position == -1) || (position == arrow->GetArrowEnd())) &&
(arrow->GetName() == name))
return arrow;
node = node->Next();
}
return NULL;
}
wxArrowHead *wxLineShape::FindArrowHead(long arrowId)
{
wxNode *node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrow = (wxArrowHead *)node->Data();
if (arrowId == arrow->GetId())
return arrow;
node = node->Next();
}
return NULL;
}
/*
* Deletes an arrowhead at the given position (if -1, any position)
*
*/
bool wxLineShape::DeleteArrowHead(int position, const wxString& name)
{
wxNode *node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrow = (wxArrowHead *)node->Data();
if (((position == -1) || (position == arrow->GetArrowEnd())) &&
(arrow->GetName() == name))
{
delete arrow;
delete node;
return TRUE;
}
node = node->Next();
}
return FALSE;
}
// Overloaded DeleteArrowHead: pass arrowhead id.
bool wxLineShape::DeleteArrowHead(long id)
{
wxNode *node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrow = (wxArrowHead *)node->Data();
if (arrow->GetId() == id)
{
delete arrow;
delete node;
return TRUE;
}
node = node->Next();
}
return FALSE;
}
/*
* Calculate the minimum width a line
* occupies, for the purposes of drawing lines in tools.
*
*/
double wxLineShape::FindMinimumWidth()
{
double minWidth = 0.0;
wxNode *node = m_arcArrows.First();
while (node)
{
wxArrowHead *arrowHead = (wxArrowHead *)node->Data();
minWidth += arrowHead->GetSize();
if (node->Next())
minWidth += arrowHead->GetSpacing();
node = node->Next();
}
// We have ABSOLUTE minimum now. So
// scale it to give it reasonable aesthetics
// when drawing with line.
if (minWidth > 0.0)
minWidth = (double)(minWidth * 1.4);
else
minWidth = 20.0;
SetEnds(0.0, 0.0, minWidth, 0.0);
Initialise();
return minWidth;
}
// Find which position we're talking about at this (x, y).
// Returns ARROW_POSITION_START, ARROW_POSITION_MIDDLE, ARROW_POSITION_END
int wxLineShape::FindLinePosition(double x, double y)
{
double startX, startY, endX, endY;
GetEnds(&startX, &startY, &endX, &endY);
// Find distances from centre, start and end. The smallest wins.
double centreDistance = (double)(sqrt((x - m_xpos)*(x - m_xpos) + (y - m_ypos)*(y - m_ypos)));
double startDistance = (double)(sqrt((x - startX)*(x - startX) + (y - startY)*(y - startY)));
double endDistance = (double)(sqrt((x - endX)*(x - endX) + (y - endY)*(y - endY)));
if (centreDistance < startDistance && centreDistance < endDistance)
return ARROW_POSITION_MIDDLE;
else if (startDistance < endDistance)
return ARROW_POSITION_START;
else
return ARROW_POSITION_END;
}
// Set alignment flags
void wxLineShape::SetAlignmentOrientation(bool isEnd, bool isHoriz)
{
if (isEnd)
{
if (isHoriz && ((m_alignmentEnd & LINE_ALIGNMENT_HORIZ) != LINE_ALIGNMENT_HORIZ))
m_alignmentEnd |= LINE_ALIGNMENT_HORIZ;
else if (!isHoriz && ((m_alignmentEnd & LINE_ALIGNMENT_HORIZ) == LINE_ALIGNMENT_HORIZ))
m_alignmentEnd -= LINE_ALIGNMENT_HORIZ;
}
else
{
if (isHoriz && ((m_alignmentStart & LINE_ALIGNMENT_HORIZ) != LINE_ALIGNMENT_HORIZ))
m_alignmentStart |= LINE_ALIGNMENT_HORIZ;
else if (!isHoriz && ((m_alignmentStart & LINE_ALIGNMENT_HORIZ) == LINE_ALIGNMENT_HORIZ))
m_alignmentStart -= LINE_ALIGNMENT_HORIZ;
}
}
void wxLineShape::SetAlignmentType(bool isEnd, int alignType)
{
if (isEnd)
{
if (alignType == LINE_ALIGNMENT_TO_NEXT_HANDLE)
{
if ((m_alignmentEnd & LINE_ALIGNMENT_TO_NEXT_HANDLE) != LINE_ALIGNMENT_TO_NEXT_HANDLE)
m_alignmentEnd |= LINE_ALIGNMENT_TO_NEXT_HANDLE;
}
else if ((m_alignmentEnd & LINE_ALIGNMENT_TO_NEXT_HANDLE) == LINE_ALIGNMENT_TO_NEXT_HANDLE)
m_alignmentEnd -= LINE_ALIGNMENT_TO_NEXT_HANDLE;
}
else
{
if (alignType == LINE_ALIGNMENT_TO_NEXT_HANDLE)
{
if ((m_alignmentStart & LINE_ALIGNMENT_TO_NEXT_HANDLE) != LINE_ALIGNMENT_TO_NEXT_HANDLE)
m_alignmentStart |= LINE_ALIGNMENT_TO_NEXT_HANDLE;
}
else if ((m_alignmentStart & LINE_ALIGNMENT_TO_NEXT_HANDLE) == LINE_ALIGNMENT_TO_NEXT_HANDLE)
m_alignmentStart -= LINE_ALIGNMENT_TO_NEXT_HANDLE;
}
}
bool wxLineShape::GetAlignmentOrientation(bool isEnd)
{
if (isEnd)
return ((m_alignmentEnd & LINE_ALIGNMENT_HORIZ) == LINE_ALIGNMENT_HORIZ);
else
return ((m_alignmentStart & LINE_ALIGNMENT_HORIZ) == LINE_ALIGNMENT_HORIZ);
}
int wxLineShape::GetAlignmentType(bool isEnd)
{
if (isEnd)
return (m_alignmentEnd & LINE_ALIGNMENT_TO_NEXT_HANDLE);
else
return (m_alignmentStart & LINE_ALIGNMENT_TO_NEXT_HANDLE);
}
wxRealPoint *wxLineShape::GetNextControlPoint(wxShape *nodeObject)
{
int n = m_lineControlPoints->Number();
int nn = 0;
if (m_to == nodeObject)
{
// Must be END of line, so we want (n - 1)th control point.
// But indexing ends at n-1, so subtract 2.
nn = n - 2;
}
else nn = 1;
wxNode *node = m_lineControlPoints->Nth(nn);
if (node)
{
return (wxRealPoint *)node->Data();
}
else
return FALSE;
}
/*
* Arrowhead
*
*/
IMPLEMENT_DYNAMIC_CLASS(wxArrowHead, wxObject)
wxArrowHead::wxArrowHead(WXTYPE type, int end, double size, double dist, const wxString& name,
wxPseudoMetaFile *mf, long arrowId)
{
m_arrowType = type; m_arrowEnd = end; m_arrowSize = size;
m_xOffset = dist;
m_yOffset = 0.0;
m_spacing = 5.0;
m_arrowName = name;
m_metaFile = mf;
m_id = arrowId;
if (m_id == -1)
m_id = wxNewId();
}
wxArrowHead::wxArrowHead(wxArrowHead& toCopy)
{
m_arrowType = toCopy.m_arrowType; m_arrowEnd = toCopy.GetArrowEnd();
m_arrowSize = toCopy.m_arrowSize;
m_xOffset = toCopy.m_xOffset;
m_yOffset = toCopy.m_yOffset;
m_spacing = toCopy.m_spacing;
m_arrowName = toCopy.m_arrowName ;
if (toCopy.m_metaFile)
m_metaFile = new wxPseudoMetaFile(*(toCopy.m_metaFile));
else
m_metaFile = NULL;
m_id = wxNewId();
}
wxArrowHead::~wxArrowHead()
{
if (m_metaFile) delete m_metaFile;
}
void wxArrowHead::SetSize(double size)
{
m_arrowSize = size;
if ((m_arrowType == ARROW_METAFILE) && m_metaFile)
{
double oldWidth = m_metaFile->m_width;
if (oldWidth == 0.0)
return;
double scale = (double)(size/oldWidth);
if (scale != 1.0)
m_metaFile->Scale(scale, scale);
}
}
// Can override this to create a different class of label shape
wxLabelShape* wxLineShape::OnCreateLabelShape(wxLineShape *parent, wxShapeRegion *region, double w, double h)
{
return new wxLabelShape(parent, region, w, h);
}
/*
* Label object
*
*/
IMPLEMENT_DYNAMIC_CLASS(wxLabelShape, wxRectangleShape)
wxLabelShape::wxLabelShape(wxLineShape *parent, wxShapeRegion *region, double w, double h):wxRectangleShape(w, h)
{
m_lineShape = parent;
m_shapeRegion = region;
SetPen(wxThePenList->FindOrCreatePen(wxColour(0, 0, 0), 1, wxDOT));
}
wxLabelShape::~wxLabelShape()
{
}
void wxLabelShape::OnDraw(wxDC& dc)
{
if (m_lineShape && !m_lineShape->GetDrawHandles())
return;
double x1 = (double)(m_xpos - m_width/2.0);
double y1 = (double)(m_ypos - m_height/2.0);
if (m_pen)
{
if (m_pen->GetWidth() == 0)
dc.SetPen(* g_oglTransparentPen);
else
dc.SetPen(* m_pen);
}
dc.SetBrush(* wxTRANSPARENT_BRUSH);
if (m_cornerRadius > 0.0)
dc.DrawRoundedRectangle(WXROUND(x1), WXROUND(y1), WXROUND(m_width), WXROUND(m_height), m_cornerRadius);
else
dc.DrawRectangle(WXROUND(x1), WXROUND(y1), WXROUND(m_width), WXROUND(m_height));
}
void wxLabelShape::OnDrawContents(wxDC& dc)
{
}
void wxLabelShape::OnDragLeft(bool draw, double x, double y, int keys, int attachment)
{
wxRectangleShape::OnDragLeft(draw, x, y, keys, attachment);
}
void wxLabelShape::OnBeginDragLeft(double x, double y, int keys, int attachment)
{
wxRectangleShape::OnBeginDragLeft(x, y, keys, attachment);
}
void wxLabelShape::OnEndDragLeft(double x, double y, int keys, int attachment)
{
wxRectangleShape::OnEndDragLeft(x, y, keys, attachment);
}
bool wxLabelShape::OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display)
{
return m_lineShape->OnLabelMovePre(dc, this, x, y, old_x, old_y, display);
}
bool wxLineShape::OnLabelMovePre(wxDC& dc, wxLabelShape* labelShape, double x, double y, double old_x, double old_y, bool display)
{
labelShape->m_shapeRegion->SetSize(labelShape->GetWidth(), labelShape->GetHeight());
// Find position in line's region list
int i = 0;
wxNode *node = GetRegions().First();
while (node)
{
if (labelShape->m_shapeRegion == (wxShapeRegion *)node->Data())
node = NULL;
else
{
node = node->Next();
i ++;
}
}
double xx, yy;
GetLabelPosition(i, &xx, &yy);
// Set the region's offset, relative to the default position for
// each region.
labelShape->m_shapeRegion->SetPosition((double)(x - xx), (double)(y - yy));
labelShape->SetX(x);
labelShape->SetY(y);
// Need to reformat to fit region.
if (labelShape->m_shapeRegion->GetText())
{
wxString s(labelShape->m_shapeRegion->GetText());
labelShape->FormatText(dc, s, i);
DrawRegion(dc, labelShape->m_shapeRegion, xx, yy);
}
return TRUE;
}
// Divert left and right clicks to line object
void wxLabelShape::OnLeftClick(double x, double y, int keys, int attachment)
{
m_lineShape->GetEventHandler()->OnLeftClick(x, y, keys, attachment);
}
void wxLabelShape::OnRightClick(double x, double y, int keys, int attachment)
{
m_lineShape->GetEventHandler()->OnRightClick(x, y, keys, attachment);
}
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