demos/atb-agg: support any integer scale factor

as suggested by @bagobor
rougier · Dec 22, 2016 · b781d97 · b781d97
1 parent 2e89c35
commit b781d97
Showing 1 changed file with 15 additions and 10 deletions.
diff --git a/demos/atb-agg.c b/demos/atb-agg.c
@@ -431,15 +431,18 @@ void TW_CALL get_tertiary( void *value, void *data )
 // ------------------------------------------------------------------- init ---
 void init( GLFWwindow* window )
 {
- bool is_scaled;
+ int scale_factor;
  {
  int pixWidth, pixHeight, winWidth, winHeight;
  glfwGetFramebufferSize( window, &pixWidth, &pixHeight );
  glfwGetWindowSize( window, &winWidth, &winHeight );
- is_scaled = pixWidth > winWidth || pixHeight > winHeight;
+ scale_factor = (pixWidth / (double) winWidth) + 0.5;
+ }
+ {
+ char buf[256];
+ sprintf(buf, "GLOBAL fontscaling=%d", scale_factor);
+ TwDefine(buf);
  }
- if (is_scaled)
- TwDefine("GLOBAL fontscaling=2");
 
  TwInit( TW_OPENGL, NULL );
 
@@ -448,18 +451,20 @@ void init( GLFWwindow* window )
  TwDefine("GLOBAL "
  "help = 'This example shows how to tune all font parameters.' ");
  TwDefine("TweakBar "
- "size = '280 400' "
- "position = '500 20' "
  "color = '127 127 127' "
  "alpha = 240 "
  "label = 'Parameters' "
  "resizable = True "
  "fontresizable = True "
  "iconifiable = True ");
- if (is_scaled)
- TwDefine("TweakBar "
- "size = '560 800' "
- "position = '1000 40' ");
+ {
+ char buf[256];
+ sprintf(
+ buf, "TweakBar size = '%d %d' position = '%d %d'",
+ 280*scale_factor, 400*scale_factor,
+ 500*scale_factor, 20*scale_factor);
+ TwDefine(buf);
+ }
 
  {
  TwEnumVal familyEV[NUM_FONTS] = {