wmcube/wmapp/xwrapper.h

   1 #include "colors.h"
   2
   3 #ifndef _MY_XWRAPPER_H
   4 #define _MY_XWRAPPER_H
   5
   6 //These must be included here so that important types and functions aren't
   7 //dragged into the X namespace, but left undefined in the global namespace.
   8 extern "C" {
   9 #   include <stddef.h>
  10 #   include <stdlib.h>
  11 #   include <sys/types.h>
  12 #   include <malloc.h>
  13 }
  14 namespace X {
  15   // Unfortunately, many common X calls are actually macros and the X::
  16   // prefix must be avoided when using them.  Still, it is nice to use
  17   // a separate namespace whenever possible.
  18
  19   // the next line ensures that X macros are expanded correctly into functions
  20   // in the X namespace, since _XPrivDisplay appears to be the only
  21   // real X object used by all X macros:
  22 # define _XPrivDisplay X::_XPrivDisplay
  23
  24   // this is just so I can easily see which identifiers are macros from Xlib
  25   // that can't be prefixed by "X::"
  26 # define X_MACRO(x) (x)
  27
  28   extern "C" {
  29 #   include <X11/X.h>
  30 #   include <X11/Xlib.h>
  31 #   include <X11/xpm.h>
  32 #   include <X11/extensions/shape.h>
  33   }
  34 };
  35
  36 // forward declaration for rectangle
  37 struct WMRectangle;
  38
  39 struct WMPixmap {
  40   X::Pixmap pixmap;
  41   X::Pixmap mask;
  42   X::GC     gc;
  43   X::XpmAttributes attr;
  44 };
  45
  46 // global X thingies
  47 extern X::Window wActiveWin, wProgramWin;
  48 extern X::Atom deleteWin, _XA_GNUSTEP_WM_FUNC;
  49
  50 class Xwrapper {
  51  private:
  52   X::Display *          xDisplay;
  53   X::Window             xRootWindow;
  54   X::XWindowAttributes  xAttributes;
  55   mutable X::GC         xGC;
  56
  57   unsigned long color_to_xcolor(Color) const;
  58   void          set_GC(X::GC, Color) const;
  59
  60  public:
  61   Xwrapper();
  62   ~Xwrapper();
  63
  64   X::Display *          xdisplay() const;
  65   const X::Window       xrootwin() const;
  66   X::GC                 get_GC() const;
  67
  68   bool create_pixmap(WMPixmap & dest, char * pixmap_bytes[]) const;
  69   bool create_pixmap(WMPixmap & dest, const WMPixmap & source) const;
  70   bool create_pixmap(WMPixmap & dest, const WMPixmap * source) const;
  71   bool create_pixmap(WMPixmap & dest, int width, int height) const;
  72   bool create_pixmap(WMPixmap & dest, int width, int height, int depth) const;
  73
  74   void free_pixmap(WMPixmap & dest) const;
  75
  76   Color get_point(const WMPixmap & src, int x, int y) const;
  77
  78   void draw_point(WMPixmap & dest, int x, int y, Color c) const;
  79   void draw_line(WMPixmap & dest, int x1, int y1, int x2, int y2, Color c)
  80           const;
  81   void draw_arc(WMPixmap & dest, int x, int y, int width, int height,
  82       int angle1, int angle2, Color c); //angles are in units of degrees * 64
  83   void draw_lines(WMPixmap & dest, const X::XPoint* points, int npoints,
  84       Color c) const; //X::XPoint is simply a struct { short x, y };
  85
  86   // draws a color gradient from left to right or bottom to top from color1
  87   // to color2. amount is the proportion of the gradient to draw i.e. 0.5
  88   // draws half the gradient. It should always be at least 2 pixels wide.
  89   void draw_horizontal_gradient(WMPixmap & dest, int x1, int y1, int x2, int y2, Color c1, Color c2, double amount = 1.0);
  90   void draw_vertical_gradient(WMPixmap & dest, int x1, int y1, int x2, int y2, Color c1, Color c2, double amount = 1.0);
  91
  92   void draw_border(WMPixmap & dest, int x, int y, int width, int height,
  93                    int thickness, Color topleft, Color botright, Color corner)
  94           const;
  95   void draw_border(WMPixmap & dest, const WMRectangle & posn, int thickness,
  96                    Color topleft, Color botright, Color corner) const;
  97
  98   void fill_rectangle(WMPixmap & dest, int x, int y, int width, int height,
  99                       Color c) const;
 100   void fill_rectangle(WMPixmap & dest, const WMRectangle & posn, Color c)
 101           const;
 102
 103   void fill_arc(WMPixmap & dest, int x, int y, int width, int height,
 104       int angle1, int angle2, Color c); //angles are in units of degrees * 64
 105
 106   enum XShape { complex = X_MACRO(Complex), convex = X_MACRO(Convex),
 107     nonconvex = X_MACRO(Nonconvex) };
 108   void fill_polygon(WMPixmap & dest, const X::XPoint* points, int npoints,
 109       Color c, XShape shape = complex) const;
 110       //shape is simply a hint to the X server about what type of shape is
 111       //being drawn. See XFillPolygon(3) for a complete description.
 112
 113   void clear_rectangle(WMPixmap & dest, int x, int y, int width, int height)
 114           const;
 115   void clear_rectangle(WMPixmap & dest, const WMRectangle & posn) const;
 116
 117   void copy_rectangle(const WMPixmap & source, WMPixmap & dest,
 118                       int source_x, int source_y, int source_w, int source_h,
 119                       int dest_x = 0, int dest_y = 0) const;
 120   void copy_rectangle(const WMPixmap & source, WMPixmap & dest,
 121                       const WMRectangle & posn, int dest_x = 0, int dest_y = 0)
 122                       const;
 123   void copy_rectangle(const WMPixmap & source, X::Drawable & dest,
 124                       int source_x, int source_y, int source_w, int source_h,
 125                       int dest_x = 0, int dest_y = 0) const;
 126   void copy_rectangle(const WMPixmap & source, X::Drawable & dest,
 127                       const WMRectangle & posn, int dest_x = 0, int dest_y = 0)
 128                       const;
 129 };
 130
 131 inline X::Display *
 132 Xwrapper::xdisplay() const { return xDisplay; }
 133
 134 inline const X::Window
 135 Xwrapper::xrootwin() const { return xRootWindow; }
 136
 137 inline X::GC
 138 Xwrapper::get_GC() const { return xGC; }
 139
 140 #endif