diff options
Diffstat (limited to 'src/Fl_Graphics_Driver.cxx')
| -rw-r--r-- | src/Fl_Graphics_Driver.cxx | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/Fl_Graphics_Driver.cxx b/src/Fl_Graphics_Driver.cxx index ab45bcf6e..0429eac0c 100644 --- a/src/Fl_Graphics_Driver.cxx +++ b/src/Fl_Graphics_Driver.cxx @@ -19,6 +19,7 @@ #include <FL/Fl.H> #include "config_lib.h" #include <FL/Fl_Graphics_Driver.H> +#include <FL/Fl_Screen_Driver.H> #include <FL/Fl_Image.H> #include <FL/fl_draw.H> @@ -74,7 +75,22 @@ int Fl_Graphics_Driver::draw_scaled(Fl_Image *img, int X, int Y, int W, int H) { /** see fl_copy_offscreen() */ void Fl_Graphics_Driver::copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy) { - // nothing to do, reimplement in driver if needed + // This platform-independent version is used when the current graphics driver is PostScript. + // It requires that pixmap has been created by fl_create_offscreen(). + int px_width = w, px_height = h; + Fl::screen_driver()->offscreen_size(pixmap, px_width, px_height); + int px = srcx, py = srcy, pw = w, ph = h; + if (px < 0) {px = 0; pw += srcx; x -= srcx;} + if (py < 0) {py = 0; ph += srcy; y -= srcy;} + if (px + pw > px_width) {pw = px_width - px;} + if (py + ph > px_height) {ph = px_height - py;} + fl_begin_offscreen(pixmap); + uchar *img = fl_read_image(NULL, px, py, pw, ph, 0); + fl_end_offscreen(); + if (img) { + fl_draw_image(img, x, y, pw, ph, 3, 0); + delete[] img; + } } /** see fl_set_spot() */ |