image: add a GDI+ loader.

build/lol-build

@@ -80,6 +80,7 @@ configure()
                 BUILDFLAGS=
             fi
             PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$PWD/contrib/gtkglarea-2.0.1/lib/pkgconfig"
+            LDFLAGS="$LDFLAGS -L$PWD/contrib/gdiplus/lib"
             LDFLAGS="$LDFLAGS -L$PWD/contrib/glew-1.7.0/lib/i686-w64-mingw32"
             LDFLAGS="$LDFLAGS -L$PWD/contrib/sdl-1.2.14/lib/i686-w64-mingw32"
             LDFLAGS="$LDFLAGS -L$PWD/contrib/sdl-image-1.2.10/lib/i686-w64-mingw32"
@@ -121,6 +122,7 @@ configure()
             PATH="$PATH" ./configure CXX=ppu-lv2-g++ CC=ppu-lv2-gcc ac_cv_exeext=.elf --host=none
             ;;
         windows-i386|windows-amd64)
+            CPPFLAGS="$CPPFLAGS -I$PWD/contrib/gdiplus/include"
             CPPFLAGS="$CPPFLAGS -I$PWD/contrib/sdl-1.2.14/include"
             CPPFLAGS="$CPPFLAGS -I$PWD/contrib/sdl-image-1.2.10/include"
             CPPFLAGS="$CPPFLAGS -I$PWD/contrib/sdl-mixer-1.2.11/include"

configure.ac

@@ -263,6 +263,24 @@ fi
 AM_CONDITIONAL(USE_LIBPNG, test "${ac_cv_my_have_libpng}" != "no")
 
 
+dnl Use Windows GDI+?
+ac_cv_my_have_gdiplus="no"
+AC_LANG_PUSH(C++)
+AC_CHECK_HEADERS(Gdiplus.h,
+ [ac_cv_my_have_gdiplus="yes"
+  LOL_LIBS="${LOL_LIBS} -lgdiplus"],
+ [ac_cv_my_have_gdiplus="no"],
+ [#include <algorithm>
+  using std::min;
+  using std::max;
+  #include <windows.h>])
+AC_LANG_POP(C++)
+if test "${ac_cv_my_have_gdiplus}" != "no"; then
+  AC_DEFINE(USE_GDIPLUS, 1, Define to 1 to use GDI+)
+fi
+AM_CONDITIONAL(USE_GDIPLUS, test "${ac_cv_my_have_gdiplus}" = "yes")
+
+
 dnl Use libcaca? (required for font generation)
 ac_cv_my_have_caca="no"
 PKG_CHECK_MODULES(CACA, caca >= 0.99.beta17, [ac_cv_my_have_caca="yes"], [:])

src/Makefile.am

@@ -27,6 +27,7 @@ liblol_a_SOURCES = \
     \
     image/image.cpp image/image.h image/image-private.h \
     image/codec/android-image.cpp \
+    image/codec/gdiplus-image.cpp \
     image/codec/ios-image.cpp \
     image/codec/sdl-image.cpp \
     image/codec/ps3-image.cpp \

src/image/codec/gdiplus-image.cpp

@@ -0,0 +1,117 @@
+//
+// Lol Engine
+//
+// Copyright: (c) 2010-2011 Sam Hocevar <sam@hocevar.net>
+//   This program is free software; you can redistribute it and/or
+//   modify it under the terms of the Do What The Fuck You Want To
+//   Public License, Version 2, as published by Sam Hocevar. See
+//   http://sam.zoy.org/projects/COPYING.WTFPL for more details.
+//
+
+#if defined HAVE_CONFIG_H
+#   include "config.h"
+#endif
+
+#if defined USE_GDIPLUS
+
+#include <cmath>
+
+#include <algorithm>
+
+using namespace std;
+
+#include <windows.h>
+#include <Gdiplus.h>
+
+#include "core.h"
+#include "../../image/image-private.h"
+
+namespace lol
+{
+
+/*
+ * Image implementation class
+ */
+
+DECLARE_IMAGE_LOADER(GdiPlusImageData, 100)
+{
+public:
+    virtual bool Open(char const *);
+    virtual bool Close();
+
+    virtual void *GetData() const;
+
+private:
+    Gdiplus::Bitmap *bitmap;
+    Gdiplus::BitmapData bdata;
+};
+
+/*
+ * Public Image class
+ */
+
+bool GdiPlusImageData::Open(char const *path)
+{
+    size_t len;
+    len = mbstowcs(NULL, path, 0);
+    wchar_t *wpath = new wchar_t[len + 1];
+    if (mbstowcs(wpath, path, len + 1) == (size_t)-1)
+    {
+#if !LOL_RELEASE
+        Log::Error("invalid image name %s\n", path);
+#endif
+        delete[] wpath;
+        return false;
+    }
+
+    ULONG_PTR token;
+    Gdiplus::GdiplusStartupInput input;
+    Gdiplus::GdiplusStartup(&token, &input, NULL);
+
+    for (wchar_t const *wname = wpath; *wname; wname++)
+        if ((bitmap = Gdiplus::Bitmap::FromFile(wname, 0)))
+            break;
+
+    delete[] wpath;
+    if (!bitmap)
+    {
+#if !LOL_RELEASE
+        Log::Error("could not load %s\n", path);
+#endif
+        return false;
+    }
+
+    size = ivec2(bitmap->GetWidth(), bitmap->GetHeight());
+    format = Image::FORMAT_RGBA;
+
+    Gdiplus::Rect rect(0, 0, size.x, size.y);
+    if(bitmap->LockBits(&rect, Gdiplus::ImageLockModeRead,
+                        PixelFormat32bppARGB, &bdata) != Gdiplus::Ok)
+    {
+#if !LOL_RELEASE
+        Log::Error("could not lock bits in %s\n", path);
+#endif
+        delete bitmap;
+        return false;
+    }
+
+    return true;
+}
+
+bool GdiPlusImageData::Close()
+{
+    bitmap->UnlockBits(&bdata);
+    delete bitmap;
+
+    return true;
+}
+
+void * GdiPlusImageData::GetData() const
+{
+    return bdata.Scan0;
+}
+
+} /* namespace lol */
+
+#endif /* defined USE_GDIPLUS */
+

src/image/image.cpp

@@ -28,6 +28,9 @@ bool ImageLoader::RegisterAllLoaders()
     REGISTER_IMAGE_LOADER(AndroidImageData)
 #endif
     REGISTER_IMAGE_LOADER(DummyImageData)
+#if defined USE_GDIPLUS
+    REGISTER_IMAGE_LOADER(GdiPlusImageData)
+#endif
 #if defined __APPLE__ && defined __MACH__ && defined __arm__
     REGISTER_IMAGE_LOADER(IosImageData)
 #endif