use stb_image for image support

CMakeLists.txt

@@ -572,6 +572,7 @@ extern/imgui_patched/misc/cpp/imgui_stdlib.cpp
 extern/igfd/ImGuiFileDialog.cpp
 
 src/gui/plot_nolerp.cpp
+
 src/gui/font_exo.cpp
 src/gui/font_liberationSans.cpp
 src/gui/font_mononoki.cpp
@@ -582,6 +583,10 @@ src/gui/font_ptMono.cpp
 src/gui/font_unifont.cpp
 src/gui/font_icon.cpp
 src/gui/fonts.cpp
+
+src/gui/image_icon.cpp
+src/gui/image.cpp
+
 src/gui/debug.cpp
 src/gui/fileDialog.cpp
 
@@ -646,9 +651,7 @@ if (APPLE)
   list(APPEND GUI_SOURCES extern/nfd-modified/src/nfd_cocoa.mm)
 endif()
 
-if (NOT APPLE)
-  list(APPEND GUI_SOURCES src/gui/icon.c)
-
+if (NOT WIN32 AND NOT APPLE)
   CHECK_INCLUDE_FILE(sys/io.h SYS_IO_FOUND)
   CHECK_INCLUDE_FILE(linux/input.h LINUX_INPUT_FOUND)
   CHECK_INCLUDE_FILE(linux/kd.h LINUX_KD_FOUND)

src/gui/gui.cpp

@@ -25,7 +25,6 @@
 
 #include "gui.h"
 #include "util.h"
-#include "icon.h"
 #include "../ta-log.h"
 #include "../fileutils.h"
 #include "imgui.h"
@@ -5445,8 +5444,9 @@ bool FurnaceGUI::init() {
 
 #if !(defined(__APPLE__) || defined(_WIN32))
   // get the icon (on macOS and Windows the icon is bundled with the app)
-  unsigned char* furIcon=getFurnaceIcon();
-  SDL_Surface* icon=SDL_CreateRGBSurfaceFrom(furIcon,256,256,32,256*4,0xff,0xff00,0xff0000,0xff000000);
+  const FurnaceGUIImage* furIcon=getImage(GUI_IMAGE_ICON);
+  SDL_Surface* icon=NULL;
+  if (furIcon!=NULL) SDL_CreateRGBSurfaceFrom(furIcon->data,furIcon->width,furIcon->height,32,256*4,0xff,0xff00,0xff0000,0xff000000);
 #endif
 
 #ifdef IS_MOBILE
@@ -5538,7 +5538,6 @@ bool FurnaceGUI::init() {
   if (icon!=NULL) {
     SDL_SetWindowIcon(sdlWin,icon);
     SDL_FreeSurface(icon);
-    free(furIcon);
   } else {
     logW("could not create icon!");
   }

src/gui/gui.h

@@ -649,6 +649,12 @@ enum FurnaceGUIActions {
   GUI_ACTION_MAX
 };
 
+enum FurnaceGUIImages {
+  GUI_IMAGE_ICON=0,
+
+  GUI_IMAGE_MAX
+};
+
 enum FurnaceGUIChanOscRef {
   GUI_OSCREF_NONE=0,
   GUI_OSCREF_CENTER,
@@ -1095,6 +1101,16 @@ struct FurnaceGUIQueryResult {
   }
 };
 
+struct FurnaceGUIImage {
+  unsigned char* data;
+  int width, height, ch;
+  FurnaceGUIImage():
+   data(NULL),
+   width(0),
+   height(0),
+   ch(0) {}
+};
+
 class FurnaceGUI {
   DivEngine* e;
 
@@ -1658,6 +1674,8 @@ class FurnaceGUI {
   int renderTimeBegin, renderTimeEnd, renderTimeDelta;
   int eventTimeBegin, eventTimeEnd, eventTimeDelta;
 
+  std::map<FurnaceGUIImages,FurnaceGUIImage*> images;
+
   int chanToMove, sysToMove, sysToDelete, opToMove;
 
   ImVec2 patWindowPos, patWindowSize;
@@ -1855,6 +1873,8 @@ class FurnaceGUI {
   void pushToggleColors(bool status);
   void popToggleColors();
 
+  const FurnaceGUIImage* getImage(FurnaceGUIImages image);
+
   void drawMobileControls();
   void drawMobileOrderSel();
   void drawEditControls();

src/gui/image.cpp

@@ -0,0 +1,66 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2023 tildearrow and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * this license only applies to the code. for the license of each font used,
+ * see `papers/`.
+ */
+
+#include "gui.h"
+#include "image.h"
+#include "../ta-log.h"
+
+#define STB_IMAGE_IMPLEMENTATION
+#define STBI_ONLY_PNG
+#define STBI_NO_STDIO
+#include "stb_image.h"
+
+const unsigned char* imageData[GUI_IMAGE_MAX]={
+  image_icon_data
+};
+
+const unsigned int imageLen[GUI_IMAGE_MAX]={
+  image_icon_size
+};
+
+const FurnaceGUIImage* FurnaceGUI::getImage(FurnaceGUIImages image) {
+  FurnaceGUIImage* ret=NULL;
+  auto retPos=images.find(image);
+  if (retPos!=images.cend()) {
+    ret=retPos->second;
+  } else {
+    ret=new FurnaceGUIImage;
+    logV("loading image %d to pool.",(int)image);
+    ret->data=stbi_load_from_memory(imageData[image],imageLen[image],&ret->width,&ret->height,&ret->ch,STBI_rgb_alpha);
+
+    if (ret->data==NULL) {
+      logE("could not load image %d!",(int)image);
+      delete ret;
+      return NULL;
+    }
+
+    logV("%dx%d",ret->width,ret->height);
+
+    images[image]=ret;
+  }
+
+  // warning silencers
+  stbi__addints_valid(2,2);
+  stbi__mul2shorts_valid(2,2);
+
+  return ret;
+}

src/gui/image.h

@@ -17,10 +17,8 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-unsigned char* getFurnaceIcon();
-#ifdef __cplusplus
-}
+#ifndef _IMAGE_H
+#define _IMAGE_H
+extern const unsigned char image_icon_data[];
+extern const unsigned int image_icon_size;
 #endif