File fltk-1.3.2-add_ability_to_convert_a_Fl_Pixmap_i... of Package fltk

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File fltk-1.3.2-add_ability_to_convert_a_Fl_Pixmap_into_a_Fl_RGB_Image.patch of Package fltk (Revision f9eeb6e05f7672f2b2b30dc7022300cd)

Currently displaying revision f9eeb6e05f7672f2b2b30dc7022300cd , Show latest

Add ability to convert a Fl_Pixmap into a Fl_RGB_Image.
This is very convenient as a lot of other functions only accept
a Fl_RGB_Image. Adding this functionality also required a bit
of spring cleaning in the the drawing routines. STR #2659.

Index: src/ps_image.cxx
===================================================================
--- src/ps_image.cxx.orig
+++ src/ps_image.cxx
@@ -185,72 +185,38 @@ static inline uchar swap_byte(const ucha
 
 extern uchar **fl_mask_bitmap;
 
+struct callback_data {
+  const uchar *data;
+  int D, LD;
+};
 
-void Fl_PostScript_Graphics_Driver::draw_image(const uchar *data, int ix, int iy, int iw, int ih, int D, int LD) {
-  double x = ix, y = iy, w = iw, h = ih;
 
-  if (D<3){ //mono
-    draw_image_mono(data, ix, iy, iw, ih, D, LD);
-    return;
-  }
+static void draw_image_cb(void *data, int x, int y, int w, uchar *buf) {
+  struct callback_data *cb_data;
+  const uchar *curdata;
 
+  cb_data = (struct callback_data*)data;
+  curdata = cb_data->data + x*cb_data->D + y*cb_data->LD;
 
-  int i,j, k;
+  memcpy(buf, curdata, w*cb_data->D);
+}
 
-  fprintf(output,"save\n");
 
-  const char * interpol;
-  if (lang_level_>1){
-    if (interpolate_)
-      interpol="true";
-    else
-      interpol="false";
-    if (mask && lang_level_>2)
-      fprintf(output, "%g %g %g %g %i %i %i %i %s CIM\n", x , y+h , w , -h , iw , ih, mx, my, interpol);
-    else
-      fprintf(output, "%g %g %g %g %i %i %s CII\n", x , y+h , w , -h , iw , ih, interpol);
-  } else
-    fprintf(output , "%g %g %g %g %i %i CI", x , y+h , w , -h , iw , ih);
+void Fl_PostScript_Graphics_Driver::draw_image(const uchar *data, int ix, int iy, int iw, int ih, int D, int LD) {
+  if (D<3){ //mono
+    draw_image_mono(data, ix, iy, iw, ih, D, LD);
+    return;
+  }
 
+  struct callback_data cb_data;
 
   if (!LD) LD = iw*D;
-  uchar *curmask=mask;
-
-  for (j=0; j<ih;j++){
-    if (mask){
-
-      for (k=0;k<my/ih;k++){
-        for (i=0; i<((mx+7)/8);i++){
-          if (!(i%80)) fprintf(output, "\n");
-          fprintf(output, "%.2x",swap_byte(*curmask));
-          curmask++;
-        }
-        fprintf(output,"\n");
-      }
-    }
-    const uchar *curdata=data+j*LD;
-    for (i=0 ; i<iw ; i++) {
-      uchar r = curdata[0];
-      uchar g =  curdata[1];
-      uchar b =  curdata[2];
-      if (lang_level_<3 && D>3) { //can do  mixing using bg_* colors)
-        unsigned int a2 = curdata[3]; //must be int
-        unsigned int a = 255-a2;
-        r = (a2 * r + bg_r * a)/255;
-        g = (a2 * g + bg_g * a)/255;
-        b = (a2 * b + bg_b * a)/255;
-      }
-      if (!(i%40)) fprintf(output, "\n");
-      fprintf(output, "%.2x%.2x%.2x", r, g, b);
-      curdata +=D;
-    }
-    fprintf(output,"\n");
-
-  }
-
-  fprintf(output," >\nrestore\n" );
 
+  cb_data.data = data;
+  cb_data.D = D;
+  cb_data.LD = LD;
 
+  draw_image(draw_image_cb, &cb_data, ix, iy, iw, ih, D);
 }
 
 void Fl_PostScript_Graphics_Driver::draw_image(Fl_Draw_Image_Cb call, void *data, int ix, int iy, int iw, int ih, int D) {
@@ -325,6 +291,14 @@ void Fl_PostScript_Graphics_Driver::draw
 	uchar g =  curdata[1];
 	uchar b =  curdata[2];
 
+        if (lang_level_<3 && D>3) { //can do  mixing using bg_* colors)
+          unsigned int a2 = curdata[3]; //must be int
+          unsigned int a = 255-a2;
+          r = (a2 * r + bg_r * a)/255;
+          g = (a2 * g + bg_g * a)/255;
+          b = (a2 * b + bg_b * a)/255;
+        }
+
 	if (!(i%40)) 	fputs("\n", output);
 	fprintf(output, "%.2x%.2x%.2x", r, g, b);
 
Index: src/Fl_Image.cxx
===================================================================
--- src/Fl_Image.cxx.orig
+++ src/Fl_Image.cxx
@@ -165,7 +165,22 @@ Fl_Image::measure(const Fl_Label *lo,		/
 //
 size_t Fl_RGB_Image::max_size_ = ~((size_t)0);
 
-/**  The destructor free all memory and server resources that are used by  the image. */
+int fl_convert_pixmap(const char*const* cdata, uchar* out, Fl_Color bg);
+
+/** The constructor creates a new RGBA image from the specified Fl_Pixmap. 
+ 
+ The RGBA image is built fully opaque except for the transparent area
+ of the pixmap that is assigned the \par bg color with full transparency */
+Fl_RGB_Image::Fl_RGB_Image(const Fl_Pixmap *pxm, Fl_Color bg):
+  Fl_Image(pxm->w(), pxm->h(), 4), id_(0), mask_(0)
+{
+  array = new uchar[w() * h() * d()];
+  alloc_array = 1;
+  fl_convert_pixmap(pxm->data(), (uchar*)array, bg);
+  data((const char **)&array, 1);
+}
+
+/**  The destructor frees all memory and server resources that are used by the image. */
 Fl_RGB_Image::~Fl_RGB_Image() {
   uncache();
   if (alloc_array) delete[] (uchar *)array;
Index: src/fl_draw_pixmap.cxx
===================================================================
--- src/fl_draw_pixmap.cxx.orig
+++ src/fl_draw_pixmap.cxx
@@ -58,99 +58,6 @@ int fl_measure_pixmap(const char * const
   return 1;
 }
 
-#ifdef U64
-
-// The callback from fl_draw_image to get a row of data passes this:
-struct pixmap_data {
-  int w, h;
-  const uchar*const* data;
-  union {
-    U64 colors[256];
-    U64* byte1[256];
-  };
-};
-
-// callback for 1 byte per pixel:
-static void cb1(void*v, int x, int y, int w, uchar* buf) {
-  pixmap_data& d = *(pixmap_data*)v;
-  const uchar* p = d.data[y]+x;
-  U64* q = (U64*)buf;
-  for (int X=w; X>0; X-=2, p += 2) {
-    if (X>1) {
-#  if WORDS_BIGENDIAN
-      *q++ = (d.colors[p[0]]<<32) | d.colors[p[1]];
-#  else
-      *q++ = (d.colors[p[1]]<<32) | d.colors[p[0]];
-#  endif
-    } else {
-#  if WORDS_BIGENDIAN
-      *q++ = d.colors[p[0]]<<32;
-#  else
-      *q++ = d.colors[p[0]];
-#  endif
-    }
-  }
-}
-
-// callback for 2 bytes per pixel:
-static void cb2(void*v, int x, int y, int w, uchar* buf) {
-  pixmap_data& d = *(pixmap_data*)v;
-  const uchar* p = d.data[y]+2*x;
-  U64* q = (U64*)buf;
-  for (int X=w; X>0; X-=2) {
-    U64* colors = d.byte1[*p++];
-    int index = *p++;
-    if (X>1) {
-      U64* colors1 = d.byte1[*p++];
-      int index1 = *p++;
-#  if WORDS_BIGENDIAN
-      *q++ = (colors[index]<<32) | colors1[index1];
-#  else
-      *q++ = (colors1[index1]<<32) | colors[index];
-#  endif
-    } else {
-#  if WORDS_BIGENDIAN
-      *q++ = colors[index]<<32;
-#  else
-      *q++ = colors[index];
-#  endif
-    }
-  }
-}
-
-#else // U32
-
-// The callback from fl_draw_image to get a row of data passes this:
-struct pixmap_data {
-  int w, h;
-  const uchar*const* data;
-  union {
-    U32 colors[256];
-    U32* byte1[256];
-  };
-};
-
-// callback for 1 byte per pixel:
-static void cb1(void*v, int x, int y, int w, uchar* buf) {
-  pixmap_data& d = *(pixmap_data*)v;
-  const uchar* p = d.data[y]+x;
-  U32* q = (U32*)buf;
-  for (int X=w; X--;) *q++ = d.colors[*p++];
-}
-
-// callback for 2 bytes per pixel:
-static void cb2(void*v, int x, int y, int w, uchar* buf) {
-  pixmap_data& d = *(pixmap_data*)v;
-  const uchar* p = d.data[y]+2*x;
-  U32* q = (U32*)buf;
-  for (int X=w; X--;) {
-    U32* colors = d.byte1[*p++];
-    *q++ = colors[*p++];
-  }
-}
-
-#endif // U64 else U32
-
 uchar **fl_mask_bitmap; // if non-zero, create bitmap and store pointer here
 
 /**
@@ -200,15 +107,19 @@ static void make_unused_color(uchar &r,
 }
 #endif
 
-/**
-  Draw XPM image data, with the top-left corner at the given position.
-  \see fl_draw_pixmap(char* const* data, int x, int y, Fl_Color bg)
-  */
-int fl_draw_pixmap(const char*const* cdata, int x, int y, Fl_Color bg) {
-  pixmap_data d;
-  if (!fl_measure_pixmap(cdata, d.w, d.h)) return 0;
+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);
   int transparent_index = -1;
+
+  if (!fl_measure_pixmap(cdata, w, h))
+    return 0;
+
+  if ((chars_per_pixel < 1) || (chars_per_pixel > 2))
+    return 0;
+
+  uchar colors[1<<(chars_per_pixel*8)][4];
+
 #ifdef WIN32
   uchar *transparent_c = (uchar *)0; // such that transparent_c[0,1,2] are the RGB of the transparent color
   color_count = 0;
@@ -221,13 +132,7 @@ int fl_draw_pixmap(const char*const* cda
     // if first color is ' ' it is transparent (put it later to make
     // it not be transparent):
     if (*p == ' ') {
-      uchar* c = (uchar*)&d.colors[(int)' '];
-#ifdef U64
-      *(U64*)c = 0;
-#  if WORDS_BIGENDIAN
-      c += 4;
-#  endif
-#endif
+      uchar* c = colors[(int)' '];
       transparent_index = ' ';
       Fl::get_color(bg, c[0], c[1], c[2]); c[3] = 0;
 #ifdef WIN32
@@ -238,13 +143,7 @@ int fl_draw_pixmap(const char*const* cda
     }
     // read all the rest of the colors:
     for (int i=0; i < ncolors; i++) {
-      uchar* c = (uchar*)&d.colors[*p++];
-#ifdef U64
-      *(U64*)c = 0;
-#  if WORDS_BIGENDIAN
-      c += 4;
-#  endif
-#endif
+      uchar* c = colors[*p++];
 #ifdef WIN32
       used_colors[3*color_count] = *p;
       used_colors[3*color_count+1] = *(p+1);
@@ -254,32 +153,17 @@ int fl_draw_pixmap(const char*const* cda
       *c++ = *p++;
       *c++ = *p++;
       *c++ = *p++;
-#ifdef __APPLE_QUARTZ__
       *c = 255;
-#else
-      *c = 0;
-#endif
     }
   } else {	// normal XPM colormap with names
-    if (chars_per_pixel>1) memset(d.byte1, 0, sizeof(d.byte1));
     for (int i=0; i<ncolors; i++) {
       const uchar *p = *data++;
       // the first 1 or 2 characters are the color index:
       int ind = *p++;
       uchar* c;
-      if (chars_per_pixel>1) {
-#ifdef U64
-	U64* colors = d.byte1[ind];
-	if (!colors) colors = d.byte1[ind] = new U64[256];
-#else
-	U32* colors = d.byte1[ind];
-	if (!colors) colors = d.byte1[ind] = new U32[256];
-#endif
-	c = (uchar*)&colors[*p];
+      if (chars_per_pixel>1)
 	ind = (ind<<8)|*p++;
-      } else {
-	c = (uchar *)&d.colors[ind];
-      }
+      c = colors[ind];
       // look for "c word", or last word if none:
       const uchar *previous_word = p;
       for (;;) {
@@ -292,16 +176,8 @@ int fl_draw_pixmap(const char*const* cda
 	previous_word = p;
 	while (*p && !isspace(*p)) p++;
       }
-#ifdef U64
-      *(U64*)c = 0;
-#  if WORDS_BIGENDIAN
-      c += 4;
-#  endif
-#endif
-#ifdef __APPLE_QUARTZ__
-      c[3] = 255;
-#endif
       int parse = fl_parse_color((const char*)p, c[0], c[1], c[2]);
+      c[3] = 255;
       if (parse) {
 #ifdef WIN32
 	used_colors[3*color_count] = c[0];
@@ -314,9 +190,7 @@ int fl_draw_pixmap(const char*const* cda
         // assume "None" or "#transparent" for any errors
 	// "bg" should be transparent...
 	Fl::get_color(bg, c[0], c[1], c[2]);
-#ifdef __APPLE_QUARTZ__
         c[3] = 0;
-#endif
 	transparent_index = ind;
 #ifdef WIN32
 	transparent_c = c;
@@ -324,7 +198,6 @@ int fl_draw_pixmap(const char*const* cda
       }
     }
   }
-  d.data = data;
 #ifdef WIN32
   if (transparent_c) {
     make_unused_color(transparent_c[0], transparent_c[1], transparent_c[2]);
@@ -334,77 +207,77 @@ int fl_draw_pixmap(const char*const* cda
     make_unused_color(r, g, b);
   }
 #endif
-  
-#ifdef  __APPLE_QUARTZ__
-  if (Fl_Surface_Device::surface() == Fl_Display_Device::display_device()) {
-    U32 *array = new U32[d.w * d.h], *q = array;
-    for (int Y = 0; Y < d.h; Y++) {
-      const uchar* p = data[Y];
-      if (chars_per_pixel <= 1) {
-	for (int X = 0; X < d.w; X++) {
-	  *q++ = d.colors[*p++];
-	}
-      } else {
-	for (int X = 0; X < d.w; X++) {
-	  U32* colors = (U32*)d.byte1[*p++];
-	  *q++ = colors[*p++];
-	}
+
+  U32 *q = (U32*)out;
+  for (int Y = 0; Y < h; Y++) {
+    const uchar* p = data[Y];
+    if (chars_per_pixel <= 1) {
+      for (int X = 0; X < w; X++)
+	memcpy(q++, colors[*p++], 4);
+    } else {
+      for (int X = 0; X < w; X++) {
+	int ind = (*p++)<<8;
+	ind |= *p++;
+	memcpy(q++, colors[ind], 4);
       }
     }
-    Fl_RGB_Image* rgb = new Fl_RGB_Image((uchar*)array, d.w, d.h, 4);
+  }
+
+  return 1;
+}
+
+/**
+  Draw XPM image data, with the top-left corner at the given position.
+  \see fl_draw_pixmap(char* const* data, int x, int y, Fl_Color bg)
+  */
+int fl_draw_pixmap(const char*const* cdata, int x, int y, Fl_Color bg) {
+  int w, h;
+
+  if (!fl_measure_pixmap(cdata, w, h))
+    return 0;
+
+  uchar buffer[w*h*4];
+
+  if (!fl_convert_pixmap(cdata, buffer, bg))
+    return 0;
+
+  // FIXME: Hack until fl_draw_image() supports alpha properly
+#ifdef  __APPLE_QUARTZ__
+  if (Fl_Surface_Device::surface() == Fl_Display_Device::display_device()) {
+    Fl_RGB_Image* rgb = new Fl_RGB_Image(buffer, w, h, 4);
+
     rgb->draw(x, y);
     delete rgb;
-    delete[] array;
-    }
-  else {
+  } else {
 #endif // __APPLE_QUARTZ__
-
   // build the mask bitmap used by Fl_Pixmap:
-  if (fl_mask_bitmap && transparent_index >= 0) {
-    int W = (d.w+7)/8;
-    uchar* bitmap = new uchar[W * d.h];
+  if (fl_mask_bitmap) {
+    int W = (w+7)/8;
+    uchar* bitmap = new uchar[W * h];
     *fl_mask_bitmap = bitmap;
-    for (int Y = 0; Y < d.h; Y++) {
-      const uchar* p = data[Y];
-      if (chars_per_pixel <= 1) {
-	int dw = d.w;
-	for (int X = 0; X < W; X++) {
-	  uchar b = (dw-->0 && *p++ != transparent_index);
-	  if (dw-->0 && *p++ != transparent_index) b |= 2;
-	  if (dw-->0 && *p++ != transparent_index) b |= 4;
-	  if (dw-->0 && *p++ != transparent_index) b |= 8;
-	  if (dw-->0 && *p++ != transparent_index) b |= 16;
-	  if (dw-->0 && *p++ != transparent_index) b |= 32;
-	  if (dw-->0 && *p++ != transparent_index) b |= 64;
-	  if (dw-->0 && *p++ != transparent_index) b |= 128;
+
+    const uchar *p = &buffer[3];
+    uchar b = 0;
+    for (int Y = 0; Y < h; Y++) {
+      b = 0;
+      for (int X = 0, bit = 1; X < w; X++, p += 4) {
+        if (*p > 127)
+          b |= bit;
+	bit <<= 1;
+        if (bit > 0x80 || X == w-1) {
 	  *bitmap++ = b;
+          bit = 1;
+	  b = 0;
 	}
-      } else {
-        uchar b = 0, bit = 1;
-	for (int X = 0; X < d.w; X++) {
-	  int ind = *p++;
-	  ind = (ind<<8) | (*p++);
-	  if (ind != transparent_index) b |= bit;
-
-          if (bit < 128) bit <<= 1;
-	  else {
-	    *bitmap++ = b;
-	    b = 0;
-	    bit = 1;
-	  }
-	}
-
-        if (bit > 1) *bitmap++ = b;
       }
-    }
+    } // for Y
   }
 
-  fl_draw_image(chars_per_pixel==1 ? cb1 : cb2, &d, x, y, d.w, d.h, 4);
+  fl_draw_image(buffer, x, y, w, h, 4);
 #ifdef __APPLE_QUARTZ__
     }
 #endif
 
-  if (chars_per_pixel > 1) for (int i = 0; i < 256; i++) delete[] d.byte1[i];
   return 1;
 }
 
Index: FL/Fl_Image.H
===================================================================
--- FL/Fl_Image.H.orig
+++ FL/Fl_Image.H
@@ -26,6 +26,7 @@
 #include <stdlib.h>
 
 class Fl_Widget;
+class Fl_Pixmap;
 struct Fl_Menu_Item;
 struct Fl_Label;
 
@@ -203,6 +204,7 @@ public:
   */
   Fl_RGB_Image(const uchar *bits, int W, int H, int D=3, int LD=0) :
     Fl_Image(W,H,D), array(bits), alloc_array(0), id_(0), mask_(0) {data((const char **)&array, 1); ld(LD);}
+  Fl_RGB_Image(const Fl_Pixmap *pxm, Fl_Color bg=FL_GRAY);
   virtual ~Fl_RGB_Image();
   virtual Fl_Image *copy(int W, int H);
   Fl_Image *copy() { return copy(w(), h()); }

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File fltk-1.3.2-add_ability_to_convert_a_Fl_Pixmap_into_a_Fl_RGB_Image.patch of Package fltk (Revision f9eeb6e05f7672f2b2b30dc7022300cd)

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