Xfce Foundation Classes

gdk/gc.hh File Reference

A GdkGC C++ wrapper interface. More...

#include <xfc/stackobject.hh>
#include <xfc/glib/object.hh>
#include <gdk/gdkgc.h>
#include <vector>
#include <xfc/gdk/inline/gc.inl>

Namespaces

namespace Xfc
namespace Xfc::Gdk

Classes

class Xfc::Gdk::GCValues
A GdkGCValues C++ wrapper class. More...
class Xfc::Gdk::GC
A GdkGC C++ wrapper class. More...

Enumerations

enum CapStyle {
  CAP_NOT_LAST = GDK_CAP_NOT_LAST,
  CAP_BUTT = GDK_CAP_BUTT,
  CAP_ROUND = GDK_CAP_ROUND,
  CAP_PROJECTING = GDK_CAP_PROJECTING
}
Determines how the end of lines are drawn. More...
enum Fill {
  SOLID = GDK_SOLID,
  TILED = GDK_TILED,
  STIPPLED = GDK_STIPPLED,
  OPAQUE_STIPPLED = GDK_OPAQUE_STIPPLED
}
Determines how primitives are drawn. More...
enum Function {
  COPY = GDK_COPY,
  INVERT = GDK_INVERT,
  XOR = GDK_XOR,
  CLEAR = GDK_CLEAR,
  AND = GDK_AND,
  AND_REVERSE = GDK_AND_REVERSE,
  AND_INVERT = GDK_AND_INVERT,
  NOOP = GDK_NOOP,
  OR = GDK_OR,
  EQUIV = GDK_EQUIV,
  OR_REVERSE = GDK_OR_REVERSE,
  COPY_INVERT = GDK_COPY_INVERT,
  OR_INVERT = GDK_OR_INVERT,
  NAND = GDK_NAND,
  NOR = GDK_NOR,
  SET = GDK_SET
}
Determines how the bit values for the source pixels are combined with the bit values for destination pixels to produce the final result. More...
enum JoinStyle {
  JOIN_MITER = GDK_JOIN_MITER,
  JOIN_ROUND = GDK_JOIN_ROUND,
  JOIN_BEVEL = GDK_JOIN_BEVEL
}
Determines how the joins between segments of a polygon are drawn. More...
enum LineStyle {
  LINE_SOLID = GDK_LINE_SOLID,
  LINE_ON_OFF_DASH = GDK_LINE_ON_OFF_DASH,
  LINE_DOUBLE_DASH = GDK_LINE_DOUBLE_DASH
}
Determines how lines are drawn. More...
enum SubwindowMode {
CLIP_BY_CHILDREN = GDK_CLIP_BY_CHILDREN,
INCLUDE_INFERIORS = GDK_INCLUDE_INFERIORS
}
Determines how drawing onto a window will affect child windows of that window. More...

Detailed Description

A GdkGC C++ wrapper interface.

Provides GC, a graphics context that encapsulates drawing properties.

Enumeration Type Documentation

enum CapStyle

Determines how the end of lines are drawn.

Enumeration values:

CAP_NOT_LAST The same as CAP_BUTT for lines of non-zero width; for zero width lines, the final point on the line will not be drawn.

CAP_BUTT The ends of the lines are drawn squared off and extending to the coordinates of the end point.

CAP_ROUND The ends of the lines are drawn as semicircles with the diameter equal to the line width and centered at the end point.

CAP_PROJECTING The ends of the lines are drawn squared off and extending half the width of the line beyond the end point.

enum Fill

Determines how primitives are drawn.

Enumeration values:

SOLID Draw with the foreground color.

TILED Draw with a tiled pixmap.

STIPPLED Draw using the stipple bitmap; pixels corresponding to bits in the stipple bitmap that are set will be drawn in the foreground color; pixels corresponding to bits that are not set will be left untouched.

OPAQUE_STIPPLED Draw using the stipple bitmap; pixels corresponding to bits in the stipple bitmap that are set will be drawn in the foreground color; pixels corresponding to bits that are not set will be left untouched.

enum Function

Determines how the bit values for the source pixels are combined with the bit values for destination pixels to produce the final result.
The sixteen values here correspond to the 16 different possible 2x2 truth tables. Only a couple of these values are usually useful; for colored images, only COPY, XOR and INVERT are generally useful. For bitmaps, AND and OR are also useful.
Enumeration values:

COPY Overwrites destination pixels with the source pixels (GXcopy).

INVERT Inverts the destination pixels (GXinvert).

XOR Xor's the destination pixels with the source pixels (GXxor).

CLEAR Set pixels to 0 (GXclear).

AND Source AND destination (GXand).

AND_REVERSE Source AND NOT destination (GXandReverse).

AND_INVERT NOT source AND destination (GXandInverted).

NOOP Destination (GXnoop).

OR Source OR destination (GXor).

EQUIV NOT source XOR destination (GXequiv).

OR_REVERSE Source OR NOT destination (GXorReverse).

COPY_INVERT NOT source (GXcopyInverted).

OR_INVERT NOT source OR destination (GXorInverted).

NAND NOT source OR NOT destination (GXnand).

NOR NOT source AND NOT destination (GXset).

SET Set pixels to 1.

enum JoinStyle

Determines how the joins between segments of a polygon are drawn.

Enumeration values:

JOIN_MITER The sides of each line are extended to meet at an angle.

JOIN_ROUND The sides of the two lines are joined by a circular arc.

JOIN_BEVEL The sides of the two lines are joined by a straight line which makes an equal angle with each line.

enum LineStyle

Determines how lines are drawn.

Enumeration values:

LINE_SOLID Lines are drawn solid.

LINE_ON_OFF_DASH Even segments are drawn; odd segments are not drawn.

LINE_DOUBLE_DASH Even segments are drawn normally.
Odd segments are drawn in the background color if the fill style is SOLID, or in the background color masked by the stipple if the fill style is STIPPLED.

enum SubwindowMode

Determines how drawing onto a window will affect child windows of that window.

Enumeration values:

CLIP_BY_CHILDREN Only draw onto the window itself.

INCLUDE_INFERIORS Draw onto the window and child windows.

Xfce Foundation Classes

XFC 4.3