/**
 * @file status.c
 * @author Joe Wingbermuehle
 * @date 2004-2006
 *
 * @brief Functions for display window move/resize status.
 *
 */

#include "jwm.h"
#include "status.h"
#include "font.h"
#include "screen.h"
#include "color.h"
#include "main.h"
#include "client.h"
#include "error.h"

typedef enum {
   SW_INVALID,
   SW_OFF,
   SW_SCREEN,
   SW_WINDOW,
   SW_CORNER
} StatusWindowType;

static Window statusWindow;
static unsigned int statusWindowHeight;
static unsigned int statusWindowWidth;
static int statusWindowX, statusWindowY;
static StatusWindowType moveStatusType;
static StatusWindowType resizeStatusType;

static void CreateMoveResizeWindow(const ClientNode *np,
   StatusWindowType type);
static void DrawMoveResizeWindow(const ClientNode *np, StatusWindowType type);
static void DestroyMoveResizeWindow();
static void GetMoveResizeCoordinates(const ClientNode *np,
   StatusWindowType type, int *x, int *y);
static StatusWindowType ParseType(const char *str);

/** Get the location to place the status window. */
void GetMoveResizeCoordinates(const ClientNode *np, StatusWindowType type,
   int *x, int *y) {

   const ScreenType *sp;

   if(type == SW_WINDOW) {
      *x = np->x + np->width / 2 - statusWindowWidth / 2;
      *y = np->y + np->height / 2 - statusWindowHeight / 2;
      return;
   }

   sp = GetCurrentScreen(np->x, np->y);

   if(type == SW_CORNER) {
      *x = sp->x;
      *y = sp->y;
      return;
   }

   /* SW_SCREEN */

   *x = sp->x + sp->width / 2 - statusWindowWidth / 2;
   *y = sp->y + sp->height / 2 - statusWindowHeight / 2;

}

/** Create the status window. */
void CreateMoveResizeWindow(const ClientNode *np, StatusWindowType type) {

   XSetWindowAttributes attrs;

   if(type == SW_OFF) {
      return;
   }

   statusWindowHeight = GetStringHeight(FONT_MENU) + 8;
   statusWindowWidth = GetStringWidth(FONT_MENU, " 00000 x 00000 ");

   GetMoveResizeCoordinates(np, type, &statusWindowX, &statusWindowY);

   attrs.background_pixel = colors[COLOR_MENU_BG];
   attrs.save_under = True;
   attrs.override_redirect = True;

   statusWindow = JXCreateWindow(display, rootWindow,
      statusWindowX, statusWindowY,
      statusWindowWidth, statusWindowHeight, 0,
      CopyFromParent, InputOutput, CopyFromParent,
      CWBackPixel | CWOverrideRedirect | CWSaveUnder,
      &attrs);

   JXMapRaised(display, statusWindow);

}

/** Draw the status window. */
void DrawMoveResizeWindow(const ClientNode *np, StatusWindowType type) {

   int x, y;

   GetMoveResizeCoordinates(np, type, &x, &y);
   if(x != statusWindowX || y != statusWindowX) {
      statusWindowX = x;
      statusWindowY = y;
      JXMoveResizeWindow(display, statusWindow, x, y,
         statusWindowWidth, statusWindowHeight);
   }

   JXSetForeground(display, rootGC, colors[COLOR_MENU_BG]);
   JXFillRectangle(display, statusWindow, rootGC, 2, 2,
      statusWindowWidth - 3, statusWindowHeight - 3);

   JXSetForeground(display, rootGC, colors[COLOR_MENU_UP]);
   JXDrawLine(display, statusWindow, rootGC,
      0, 0, statusWindowWidth - 1, 0);
   JXDrawLine(display, statusWindow, rootGC,
      0, 1, statusWindowWidth - 2, 1);
   JXDrawLine(display, statusWindow, rootGC,
      0, 2, 0, statusWindowHeight - 1);
   JXDrawLine(display, statusWindow, rootGC,
      1, 2, 1, statusWindowHeight - 2);

   JXSetForeground(display, rootGC, colors[COLOR_MENU_DOWN]);
   JXDrawLine(display, statusWindow, rootGC,
      1, statusWindowHeight - 1, statusWindowWidth - 1,
      statusWindowHeight - 1);
   JXDrawLine(display, statusWindow, rootGC,
      2, statusWindowHeight - 2, statusWindowWidth - 1,
      statusWindowHeight - 2);
   JXDrawLine(display, statusWindow, rootGC,
      statusWindowWidth - 1, 1, statusWindowWidth - 1,
      statusWindowHeight - 3);
   JXDrawLine(display, statusWindow, rootGC,
      statusWindowWidth - 2, 2, statusWindowWidth - 2,
      statusWindowHeight - 3);

}

/** Destroy the status window. */
void DestroyMoveResizeWindow() {

   if(statusWindow != None) {
      JXDestroyWindow(display, statusWindow);
      statusWindow = None;
   }

}

/** Create a move status window. */
void CreateMoveWindow(ClientNode *np) {

   CreateMoveResizeWindow(np, moveStatusType);

}

/** Update the move status window. */
void UpdateMoveWindow(ClientNode *np) {

   char str[80];
   unsigned int width;

   if(moveStatusType == SW_OFF) {
      return;
   }

   DrawMoveResizeWindow(np, moveStatusType);

   snprintf(str, sizeof(str), "(%d, %d)", np->x, np->y);
   width = GetStringWidth(FONT_MENU, str);
   RenderString(statusWindow, FONT_MENU, COLOR_MENU_FG,
      statusWindowWidth / 2 - width / 2, 4, rootWidth, NULL, str);

}

/** Destroy the move status window. */
void DestroyMoveWindow() {

   DestroyMoveResizeWindow();

}

/** Create a resize status window. */
void CreateResizeWindow(ClientNode *np) {

   CreateMoveResizeWindow(np, resizeStatusType);

}

/** Update the resize status window. */
void UpdateResizeWindow(ClientNode *np, int gwidth, int gheight) {

   char str[80];
   unsigned int fontWidth;

   if(resizeStatusType == SW_OFF) {
      return;
   }

   DrawMoveResizeWindow(np, resizeStatusType);

   snprintf(str, sizeof(str), "%d x %d", gwidth, gheight);
   fontWidth = GetStringWidth(FONT_MENU, str);
   RenderString(statusWindow, FONT_MENU, COLOR_MENU_FG,
      statusWindowWidth / 2 - fontWidth / 2, 4, rootWidth, NULL, str);

}

/** Destroy the resize status window. */
void DestroyResizeWindow() {

   DestroyMoveResizeWindow();

}

/** Parse a status window type string. */
StatusWindowType ParseType(const char *str) {

   if(!str) {
      return SW_SCREEN;
   } else if(!strcmp(str, "off")) {
      return SW_OFF;
   } else if(!strcmp(str, "screen")) {
      return SW_SCREEN;
   } else if(!strcmp(str, "window")) {
      return SW_WINDOW;
   } else if(!strcmp(str, "corner")) {
      return SW_CORNER;
   } else {
      return SW_INVALID;
   }

}

/** Set the move status window type. */
void SetMoveStatusType(const char *str) {

   StatusWindowType type;

   type = ParseType(str);
   if(type == SW_INVALID) {
      moveStatusType = SW_SCREEN;
      Warning("invalid MoveMode coordinates: \"%s\"", str);
   } else {
      moveStatusType = type;
   }

}

/** Set the resize status window type. */
void SetResizeStatusType(const char *str) {

   StatusWindowType type;

   type = ParseType(str);
   if(type == SW_INVALID) {
      resizeStatusType = SW_SCREEN;
      Warning("invalid ResizeMode coordinates: \"%s\"", str);
   } else {
      resizeStatusType = type;
   }

}