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Improve Fl_Widget_Surface::print_window_part() with better quality when scaling factor > 1.

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12368 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy
2017-07-31 07:47:48 +00:00
parent c4e04e4c7f
commit 87b1ff244d
1 changed files with 6 additions and 11 deletions
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src/Fl_Widget_Surface.cxx
+6 -11
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@@ -152,23 +152,18 @@ void Fl_Widget_Surface::origin(int x, int y) {
*/ */
void Fl_Widget_Surface::print_window_part(Fl_Window *win, int x, int y, int w, int h, int delta_x, int delta_y) void Fl_Widget_Surface::print_window_part(Fl_Window *win, int x, int y, int w, int h, int delta_x, int delta_y)
{ {
Fl_Display_Device::display_device()->set_current(); Fl_Surface_Device::push_current(Fl_Display_Device::display_device());
Fl_Window *save_front = Fl::first_window(); Fl_Window *save_front = Fl::first_window();
win->show(); win->show();
Fl::check(); Fl::check();
win->driver()->flush(); // makes the window current win->driver()->flush(); // makes the window current
const uchar *image_data;
Fl_RGB_Image *img = Fl_Screen_Driver::traverse_to_gl_subwindows(win, NULL, x, y, w, h, 0, NULL); Fl_RGB_Image *img = Fl_Screen_Driver::traverse_to_gl_subwindows(win, NULL, x, y, w, h, 0, NULL);
if (img->w() != w) { Fl_Shared_Image *shared = Fl_Shared_Image::get(img);
Fl_RGB_Image *img2 = (Fl_RGB_Image*)img->copy(w, h); shared->scale(w, h, 1, 1);
delete img;
img = img2;
}
image_data = img->array;
if (save_front != win) save_front->show(); if (save_front != win) save_front->show();
set_current(); Fl_Surface_Device::pop_current();
fl_draw_image(image_data, delta_x, delta_y, w, h, 3); shared->draw(delta_x, delta_y);
delete img; shared->release();
} }
/** /**