commit d51481f95e6a6ee2b2482705e8930aac3e15d7b6
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Tue Feb 16 11:58:07 2021 +0100
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Tue Feb 16 11:58:15 2021 +0100

    Remove FL_CFG_SYS_WIN32 preprocessor variable from fl_draw_pixmap.cxx

 FL/Fl_Graphics_Driver.H                          |  2 +-
 src/Fl_Graphics_Driver.cxx                       |  2 +-
 src/drivers/GDI/Fl_GDI_Graphics_Driver.H         |  2 +-
 src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx | 32 ++++++++++++++++++
 src/fl_draw_pixmap.cxx                           | 43 ++----------------------
 5 files changed, 37 insertions(+), 44 deletions(-)

diff --git FL/Fl_Graphics_Driver.H FL/Fl_Graphics_Driver.H
index 88d1423..2c33212 100644
--- FL/Fl_Graphics_Driver.H
+++ FL/Fl_Graphics_Driver.H
@@ -141,7 +141,7 @@ private:
   virtual void draw_fixed(Fl_Bitmap *bm,int XP, int YP, int WP, int HP, int cx, int cy);
   virtual void draw_fixed(Fl_RGB_Image *rgb,int XP, int YP, int WP, int HP, int cx, int cy);
   // the default implementation of make_unused_color_() is most probably enough
-  virtual void make_unused_color_(unsigned char &r, unsigned char &g, unsigned char &b);
+  virtual void make_unused_color_(unsigned char &r, unsigned char &g, unsigned char &b, int color_count, void **data);
   // some platforms may need to reimplement this
   virtual void set_current_();
   float scale_; // scale between FLTK and drawing coordinates: drawing = FLTK * scale_
diff --git src/Fl_Graphics_Driver.cxx src/Fl_Graphics_Driver.cxx
index d33e5e5..ec3cc8d 100644
--- src/Fl_Graphics_Driver.cxx
+++ src/Fl_Graphics_Driver.cxx
@@ -413,7 +413,7 @@ void Fl_Graphics_Driver::draw_fixed(Fl_Bitmap *bm,int XP, int YP, int WP, int HP
 
 void Fl_Graphics_Driver::draw_fixed(Fl_RGB_Image *rgb,int XP, int YP, int WP, int HP, int cx, int cy) {}
 
-void Fl_Graphics_Driver::make_unused_color_(unsigned char &r, unsigned char &g, unsigned char &b) {}
+void Fl_Graphics_Driver::make_unused_color_(unsigned char &r, unsigned char &g, unsigned char &b, int color_count, void **data) {}
 
 /** Support function for Fl_Pixmap drawing */
 void Fl_Graphics_Driver::cache(Fl_Pixmap *img) { }
diff --git src/drivers/GDI/Fl_GDI_Graphics_Driver.H src/drivers/GDI/Fl_GDI_Graphics_Driver.H
index 01014f4..e2a29da 100644
--- src/drivers/GDI/Fl_GDI_Graphics_Driver.H
+++ src/drivers/GDI/Fl_GDI_Graphics_Driver.H
@@ -40,7 +40,7 @@ private:
   void set_current_();
   void draw_fixed(Fl_Pixmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
   void draw_fixed(Fl_Bitmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
-  virtual void make_unused_color_(unsigned char &r, unsigned char &g, unsigned char &b);
+  virtual void make_unused_color_(unsigned char &r, unsigned char &g, unsigned char &b, int color_count, void **data);
 protected:
   void draw_fixed(Fl_RGB_Image *rgb, int XP, int YP, int WP, int HP, int cx, int cy);
   void cache(Fl_RGB_Image *rgb);
diff --git src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx
index cf476f7..5bb5157 100644
--- src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx
+++ src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx
@@ -700,6 +700,38 @@ void Fl_GDI_Printer_Graphics_Driver::draw_pixmap(Fl_Pixmap *pxm, int XP, int YP,
   }
 }
 
+// Makes an RGB triplet different from all the colors used in the pixmap
+// and computes Fl_Graphics_Driver::need_pixmap_bg_color from this triplet
+void Fl_GDI_Graphics_Driver::make_unused_color_(uchar &r, uchar &g, uchar &b, int color_count, void **data) {
+  typedef struct { uchar r; uchar g; uchar b; } UsedColor;
+  UsedColor *used_colors = *(UsedColor**)data;
+  int i;
+  r = 2; g = 3; b = 4;
+  while (1) {
+    for ( i=0; i<color_count; i++ )
+      if ( used_colors[i].r == r &&
+           used_colors[i].g == g &&
+           used_colors[i].b == b )
+        break;
+    if (i >= color_count) {
+      free((void*)used_colors);
+      *(UsedColor**)data = NULL;
+      need_pixmap_bg_color = RGB(r, g, b);
+      return;
+    }
+    if (r < 255) {
+      r++;
+    } else {
+      r = 0;
+      if (g < 255) {
+        g++;
+      } else {
+        g = 0;
+        b++;
+      }
+    }
+  }
+}
 
 void Fl_GDI_Graphics_Driver::cache(Fl_Pixmap *img) {
   Fl_Image_Surface *surf = new Fl_Image_Surface(img->data_w(), img->data_h());
diff --git src/fl_draw_pixmap.cxx src/fl_draw_pixmap.cxx
index f515b86..3384f25 100644
--- src/fl_draw_pixmap.cxx
+++ src/fl_draw_pixmap.cxx
@@ -30,12 +30,8 @@
 // The above comments were checked in as r2, and much has changed since then;
 // transparency added, color cube not required, etc.      -erco Oct 20 2013
 
-#include "config_lib.h"
 #include <FL/Fl.H>
 #include "Fl_System_Driver.H"
-#if defined(FL_CFG_SYS_WIN32)
-#include "drivers/GDI/Fl_GDI_Graphics_Driver.H"
-#endif
 #include <FL/platform.H>
 #include <FL/fl_draw.H>
 #include <stdio.h>
@@ -72,41 +68,6 @@ int fl_measure_pixmap(const char * const *cdata, int &w, int &h) {
   return 1;
 }
 
-#if defined(FL_CFG_SYS_WIN32)
-
-
-// Makes an RGB triplet different from all the colors used in the pixmap
-// and compute Fl_Graphics_Driver::need_pixmap_bg_color from this triplet
-void Fl_GDI_Graphics_Driver::make_unused_color_(uchar &r, uchar &g, uchar &b) {
-  int i;
-  r = 2; g = 3; b = 4;
-  while (1) {
-    for ( i=0; i<color_count; i++ )
-      if ( used_colors[i].r == r &&
-           used_colors[i].g == g &&
-           used_colors[i].b == b )
-        break;
-    if (i >= color_count) {
-      free((void*)used_colors); used_colors = NULL;
-      need_pixmap_bg_color = RGB(r, g, b);
-      return;
-    }
-    if (r < 255) {
-      r++;
-    } else {
-      r = 0;
-      if (g < 255) {
-        g++;
-      } else {
-        g = 0;
-        b++;
-      }
-    }
-  }
-}
-#endif // FL_CFG_SYS_WIN32
-
-
 int fl_convert_pixmap(const char*const* cdata, uchar* out, Fl_Color bg) {
   int w, h;
   const uchar*const* data = (const uchar*const*)(cdata+1);
@@ -194,10 +155,10 @@ int fl_convert_pixmap(const char*const* cdata, uchar* out, Fl_Color bg) {
   } // if ncolors
   if (Fl_Graphics_Driver::need_pixmap_bg_color) {
     if (transparent_c) {
-      fl_graphics_driver->make_unused_color_(transparent_c[0], transparent_c[1], transparent_c[2]);
+      fl_graphics_driver->make_unused_color_(transparent_c[0], transparent_c[1], transparent_c[2], color_count, (void**)&used_colors);
     } else {
       uchar r, g, b;
-      fl_graphics_driver->make_unused_color_(r, g, b);
+      fl_graphics_driver->make_unused_color_(r, g, b, color_count, (void**)&used_colors);
     }
   }