diff options
| author | ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com> | 2019-04-09 18:50:18 +0200 |
|---|---|---|
| committer | ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com> | 2019-04-09 18:50:18 +0200 |
| commit | 8286e37b18dcbf788cea188a9f1df5824baf0731 (patch) | |
| tree | 06d14a259807a71300c8851e639c9bbd0f9dd867 /FL | |
| parent | 0ddf5e74a94132e00e117372d0350f798d537543 (diff) | |
Add public function Fl_RGB_Image *fl_capture_window_part()
In the context of HighDPI screens, the API of function fl_read_image()
is inadequate because a rectangle of size WxH drawing units
of a window may contain many more than W*H pixels.
Function fl_capture_window_part() returns an Fl_RGB_Image
object whose drawing size matches the size of the rectangle
and whose data size matches the, possibly larger, size in pixels
of the corresponding area of the mapped window.
Diffstat (limited to 'FL')
| -rw-r--r-- | FL/fl_draw.H | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/FL/fl_draw.H b/FL/fl_draw.H index f1a867071..3805190b3 100644 --- a/FL/fl_draw.H +++ b/FL/fl_draw.H @@ -794,6 +794,7 @@ inline void fl_draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int inline char fl_can_do_alpha_blending() {return Fl_Graphics_Driver::default_driver().can_do_alpha_blending();} FL_EXPORT uchar *fl_read_image(uchar *p,int X,int Y,int W,int H,int alpha=0); +FL_EXPORT Fl_RGB_Image *fl_capture_window_part(Fl_Window *win, int x, int y, int w, int h); // pixmaps: /** |