workbench/devs/diskimage/ra_gui/images.c

   1 /* Copyright 2007-2012 Fredrik Wikstrom. All rights reserved.
   2 **
   3 ** Redistribution and use in source and binary forms, with or without
   4 ** modification, are permitted provided that the following conditions
   5 ** are met:
   6 **
   7 ** 1. Redistributions of source code must retain the above copyright
   8 **    notice, this list of conditions and the following disclaimer.
   9 **
  10 ** 2. Redistributions in binary form must reproduce the above copyright
  11 **    notice, this list of conditions and the following disclaimer in the
  12 **    documentation and/or other materials provided with the distribution.
  13 **
  14 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  15 ** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16 ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17 ** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  18 ** LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  19 ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  20 ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  21 ** INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  22 ** CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  23 ** ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  24 ** POSSIBILITY OF SUCH DAMAGE.
  25 */
  26
  27 #include "diskimagegui.h"
  28 #include <proto/dos.h>
  29 #include <proto/utility.h>
  30 #include <proto/intuition.h>
  31
  32 extern struct ClassLibrary *PNGBase;
  33
  34 #ifndef BITMAP_DisabledSourceFile
  35 #define BITMAP_DisabledSourceFile (BITMAP_Dummy + 19)
  36 #endif
  37
  38 #define PNGObject NewObject(PNGBase->cl_Class, NULL
  39
  40 static BPTR FileExists (CONST_STRPTR dir, CONST_STRPTR file, STRPTR path, LONG path_size) {
  41         struct Process *proc = (struct Process *)FindTask(NULL);
  42         APTR window = proc->pr_WindowPtr;
  43         BPTR fh;
  44         Strlcpy(path, dir, path_size);
  45         AddPart(path, file, path_size);
  46         proc->pr_WindowPtr = (APTR)~0;
  47         fh = Open(path, MODE_OLDFILE);
  48         proc->pr_WindowPtr = window;
  49         if (fh) Close(fh);
  50         return fh;
  51 }
  52
  53 BOOL FindImage (CONST_STRPTR image, STRPTR path, LONG path_size) {
  54         return FileExists("PROGDIR:", image, path, path_size)
  55                 || FileExists("PROGDIR:Images", image, path, path_size)
  56                 || FileExists("SYS:Prefs/Presets/Images", image, path, path_size)
  57                 || FileExists("TBImages:", image, path, path_size);
  58 }
  59
  60 Object *LoadImage (struct Screen *screen, CONST_STRPTR image, BOOL selected, BOOL disabled) {
  61         TEXT normal_path[64];
  62         TEXT selected_path[64];
  63         TEXT disabled_path[64];
  64         if (!FindImage(image, normal_path, sizeof(normal_path))) {
  65                 return NULL;
  66         }
  67         Strlcpy(selected_path, normal_path, sizeof(selected_path));
  68         Strlcat(selected_path, "_s", sizeof(selected_path));
  69         Strlcpy(disabled_path, normal_path, sizeof(disabled_path));
  70         Strlcat(disabled_path, "_g", sizeof(disabled_path));
  71         if (PNGBase) {
  72                 Object *image = PNGObject,
  73                         BITMAP_Screen,                          screen,
  74                         BITMAP_SourceFile,                      normal_path,
  75                         selected ? BITMAP_SelectSourceFile : TAG_IGNORE, selected_path,
  76                         disabled ? BITMAP_DisabledSourceFile : TAG_IGNORE, disabled_path,
  77                 End;
  78                 if (image) return image;
  79         }
  80         return BitMapObject,
  81                 BITMAP_Screen,                          screen,
  82                 BITMAP_SourceFile,                      normal_path,
  83                 selected ? BITMAP_SelectSourceFile : TAG_IGNORE, selected_path,
  84                 disabled ? BITMAP_DisabledSourceFile : TAG_IGNORE, disabled_path,
  85                 BITMAP_Masking,                         TRUE,
  86         End;
  87 }