Fix: Drawing bugs on Windows at very large scales (fltk#1144)

age-rs · Dec 2, 2024 · 981aa8c · 981aa8c
1 parent 9a7f4bd
commit 981aa8c
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Showing 3 changed files with 8 additions and 6 deletions.
diff --git a/src/Fl_Graphics_Driver.cxx b/src/Fl_Graphics_Driver.cxx
@@ -1199,7 +1199,6 @@ void Fl_Scalable_Graphics_Driver::draw_image_mono_unscaled(Fl_Draw_Image_Cb cb,
 float Fl_Scalable_Graphics_Driver::override_scale() {
   float s = scale();
   if (s != 1.f) {
-    push_no_clip();
     scale(1.f);
   }
   return s;
@@ -1208,7 +1207,6 @@ float Fl_Scalable_Graphics_Driver::override_scale() {
 void Fl_Scalable_Graphics_Driver::restore_scale(float s) {
   if (s != 1.f) {
     scale(s);
-    pop_clip();
   }
 }
 

diff --git a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
@@ -1493,15 +1493,17 @@ char Fl_Cairo_Graphics_Driver::can_do_alpha_blending() {
 float Fl_Cairo_Graphics_Driver::override_scale() {
   float s = scale();
   if (s != 1.f && Fl_Display_Device::display_device()->is_current()) {
-    scale(1);
+    cairo_scale(cairo_, 1./s, 1./s);
+    Fl_Graphics_Driver::scale(1);
   }
   return s;
 }
 
 
 void Fl_Cairo_Graphics_Driver::restore_scale(float s) {
   if (s != 1.f && Fl_Display_Device::display_device()->is_current()) {
-    scale(s);
+    cairo_scale(cairo_, s, s);
+    Fl_Graphics_Driver::scale(s);
   }
 }
 

diff --git a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.cxx b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.cxx
@@ -159,13 +159,15 @@ void Fl_Quartz_Graphics_Driver::cache_size(Fl_Image *img, int &width, int &heigh
 float Fl_Quartz_Graphics_Driver::override_scale() {
   float s = scale();
   if (s != 1.f && Fl_Display_Device::display_device()->is_current()) {
-    scale(1);
+    CGContextScaleCTM(gc_, 1./s, 1./s);
+    Fl_Graphics_Driver::scale(1);
   }
   return s;
 }
 
 void Fl_Quartz_Graphics_Driver::restore_scale(float s) {
   if (s != 1.f && Fl_Display_Device::display_device()->is_current()) {
-    scale(s);
+    CGContextScaleCTM(gc_, s, s);
+    Fl_Graphics_Driver::scale(s);
   }
 }