1 files changed, 113 insertions, 0 deletions
diff --git a/src/Fl_Pixmap.cxx b/src/Fl_Pixmap.cxx
new file mode 100644
index 000000000..3e4e1af11
--- /dev/null
+++ b/src/Fl_Pixmap.cxx
@@ -0,0 +1,113 @@
+// Fl_Pixmap.C
+
+// Draws X pixmap data, keeping it stashed in a server pixmap so it
+// redraws fast.
+
+// See fl_draw_pixmap.C for code used to get the actual data into pixmap.
+// Implemented without using the xpm library (which I can't use because
+// it interferes with the color cube used by fl_draw_image).
+
+#include <FL/Fl.H>
+#include <FL/fl_draw.H>
+#include <FL/x.H>
+#include <FL/Fl_Widget.H>
+#include <FL/Fl_Menu_Item.H>
+#include <FL/Fl_Pixmap.H>
+
+extern uchar **fl_mask_bitmap; // used by fl_draw_pixmap.C to store mask
+void fl_restore_clip(); // in fl_rect.C
+
+void Fl_Pixmap::draw(int X, int Y, int W, int H, int cx,int cy) {
+  if (w<0) fl_measure_pixmap(data, w, h);
+  if (!w) return;
+  // clip the box down to the size of image, quit if empty:
+  if (cx < 0) {W += cx; X -= cx; cx = 0;}
+  if (cx+W > w) W = w-cx;
+  if (W <= 0) return;
+  if (cy < 0) {H += cy; Y -= cy; cy = 0;}
+  if (cy+H > h) H = h-cy;
+  if (H <= 0) return;
+  if (!id) {
+    id = (ulong)fl_create_offscreen(w, h);
+    fl_begin_offscreen((Fl_Offscreen)id);
+#ifdef WIN32 // mask is nyi, instead use a constant color
+    fl_draw_pixmap(data, 0, 0, (Fl_Color)mask);
+#else
+    uchar *bitmap = 0;
+    fl_mask_bitmap = &bitmap;
+    fl_draw_pixmap(data, 0, 0, FL_BLACK);
+    fl_mask_bitmap = 0;
+    if (bitmap) {
+      mask = XCreateBitmapFromData(fl_display, fl_window,
+				   (const char*)bitmap, (w+7)&-8, h);
+      delete[] bitmap;
+    }
+#endif
+    fl_end_offscreen();
+  }
+#ifndef WIN32
+  if (mask) {
+    // I can't figure out how to combine a mask with existing region,
+    // so cut the image down to a clipped rectangle:
+    int nx, ny; fl_clip_box(X,Y,W,H,nx,ny,W,H);
+    cx += nx-X; X = nx;
+    cy += ny-Y; Y = ny;
+    // make X use the bitmap as a mask:
+    XSetClipMask(fl_display, fl_gc, mask);
+    int ox = X-cx; if (ox < 0) ox += w;
+    int oy = Y-cy; if (oy < 0) oy += h;
+    XSetClipOrigin(fl_display, fl_gc, X-cx, Y-cy);
+  }
+#endif
+  fl_copy_offscreen(X, Y, W, H, (Fl_Offscreen)id, cx, cy);
+#ifndef WIN32
+  if (mask) {
+    // put the old clip region back
+    XSetClipOrigin(fl_display, fl_gc, 0, 0);
+    fl_restore_clip();
+  }
+#endif
+}
+
+Fl_Pixmap::~Fl_Pixmap() {
+  if (id) fl_delete_offscreen((Fl_Offscreen)id);
+#ifndef WIN32
+  if (mask) fl_delete_offscreen((Fl_Offscreen)mask);
+#endif
+}
+
+static void pixmap_labeltype(
+    const Fl_Label* o, int x, int y, int w, int h, Fl_Align a)
+{
+  Fl_Pixmap* b = (Fl_Pixmap*)(o->value);
+  if (b->w<0) fl_measure_pixmap(b->data, b->w, b->h);
+  int cx;
+  if (a & FL_ALIGN_LEFT) cx = 0;
+  else if (a & FL_ALIGN_RIGHT) cx = b->w-w;
+  else cx = (b->w-w)/2;
+  int cy;
+  if (a & FL_ALIGN_TOP) cy = 0;
+  else if (a & FL_ALIGN_BOTTOM) cy = b->h-h;
+  else cy = (b->h-h)/2;
+  b->draw(x,y,w,h,cx,cy);
+}
+
+static void pixmap_measure(const Fl_Label* o, int& w, int& h) {
+  Fl_Pixmap* b = (Fl_Pixmap*)(o->value);
+  if (b->w<0) fl_measure_pixmap(b->data, b->w, b->h);
+  w = b->w;
+  h = b->h;
+}
+
+void Fl_Pixmap::label(Fl_Widget* o) {
+#ifdef WIN32
+  mask = o->color();
+#endif
+  Fl::set_labeltype(_FL_PIXMAP_LABEL, pixmap_labeltype, pixmap_measure);
+  o->label(_FL_PIXMAP_LABEL, (const char*)this);
+}
+
+void Fl_Pixmap::label(Fl_Menu_Item* o) {
+  Fl::set_labeltype(_FL_PIXMAP_LABEL, pixmap_labeltype, pixmap_measure);
+  o->label(_FL_PIXMAP_LABEL, (const char*)this);
+}