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9212f560f0
Should fix bug #552678. Patch by Dominic Lachowicz, based on a clueful response from Jason Copenhaver on Albeto Ruiz's blog http://aruiz.typepad.com/siliconisland/2009/08/dear-lazyweb-gtk-need-gdi-help.html
1023 lines
28 KiB
C
1023 lines
28 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* GdkPixbuf library - Win32 GDI+ Pixbuf Loader
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*
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* Copyright (C) 2008 Dominic Lachowicz
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* Copyright (C) 2008 Alberto Ruiz
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*
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* Authors: Dominic Lachowicz <domlachowicz@gmail.com>
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* Alberto Ruiz <aruiz@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more * You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#define INITGUID
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#include <ole2.h>
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#include "io-gdip-utils.h"
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#include "io-gdip-native.h"
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#include "io-gdip-propertytags.h"
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#include "io-gdip-animation.h"
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#define LOAD_BUFFER_SIZE 65536
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struct _GdipContext {
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GdkPixbufModuleUpdatedFunc updated_func;
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GdkPixbufModulePreparedFunc prepared_func;
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GdkPixbufModuleSizeFunc size_func;
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gpointer user_data;
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GByteArray *buffer;
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IStream *stream;
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HGLOBAL hg;
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};
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typedef struct _GdipContext GdipContext;
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static GdiplusStartupFunc GdiplusStartup;
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static GdipCreateBitmapFromStreamFunc GdipCreateBitmapFromStream;
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static GdipBitmapGetPixelFunc GdipBitmapGetPixel;
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static GdipGetImageHeightFunc GdipGetImageHeight;
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static GdipDisposeImageFunc GdipDisposeImage;
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static GdipGetImageFlagsFunc GdipGetImageFlags;
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static GdipGetImageWidthFunc GdipGetImageWidth;
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static GdipImageGetFrameCountFunc GdipImageGetFrameCount;
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static GdipImageSelectActiveFrameFunc GdipImageSelectActiveFrame;
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static GdipGetPropertyItemSizeFunc GdipGetPropertyItemSize;
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static GdipGetPropertyItemFunc GdipGetPropertyItem;
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static GdipGetPropertyCountFunc GdipGetPropertyCount;
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static GdipGetPropertyIdListFunc GdipGetPropertyIdList;
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static GdipCreateBitmapFromScan0Func GdipCreateBitmapFromScan0;
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static GdipSaveImageToStreamFunc GdipSaveImageToStream;
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static GdipBitmapSetPixelFunc GdipBitmapSetPixel;
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static GdipDrawImageIFunc GdipDrawImageI;
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static GdipGetImageGraphicsContextFunc GdipGetImageGraphicsContext;
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static GdipFlushFunc GdipFlush;
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static GdipGraphicsClearFunc GdipGraphicsClear;
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static GdipBitmapSetResolutionFunc GdipBitmapSetResolution;
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static GdipGetImageHorizontalResolutionFunc GdipGetImageHorizontalResolution;
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static GdipGetImageVerticalResolutionFunc GdipGetImageVerticalResolution;
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static GdipLoadImageFromStreamFunc GdipLoadImageFromStream;
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static GdipDeleteGraphicsFunc GdipDeleteGraphics;
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static GdipGetImageEncodersFunc GdipGetImageEncoders;
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static GdipGetImageEncodersSizeFunc GdipGetImageEncodersSize;
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static GdipBitmapLockBitsFunc GdipBitmapLockBits;
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static GdipBitmapUnlockBitsFunc GdipBitmapUnlockBits;
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static GdipGetImagePixelFormatFunc GdipGetImagePixelFormat;
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static GdipCloneBitmapAreaIFunc GdipCloneBitmapAreaI;
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DEFINE_GUID(FrameDimensionTime, 0x6aedbd6d,0x3fb5,0x418a,0x83,0xa6,0x7f,0x45,0x22,0x9d,0xc8,0x72);
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DEFINE_GUID(FrameDimensionPage, 0x7462dc86,0x6180,0x4c7e,0x8e,0x3f,0xee,0x73,0x33,0xa7,0xa4,0x83);
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static void
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gdip_set_error_from_hresult (GError **error, gint code, HRESULT hr, const char *format)
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{
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gchar *msg;
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msg = g_win32_error_message (hr);
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if (msg) {
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g_set_error (error, GDK_PIXBUF_ERROR, code, format, msg);
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g_free (msg);
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}
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}
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static void
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gdip_set_error_from_gpstatus (GError **error, gint code, GpStatus status)
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{
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const char *msg;
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switch (status)
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{
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#define CASE(x) case x: msg = #x; break
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CASE (GenericError);
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CASE (InvalidParameter);
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CASE (OutOfMemory);
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CASE (ObjectBusy);
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CASE (InsufficientBuffer);
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CASE (NotImplemented);
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CASE (Win32Error);
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CASE (WrongState);
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CASE (Aborted);
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CASE (FileNotFound);
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CASE (ValueOverflow);
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CASE (AccessDenied);
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CASE (UnknownImageFormat);
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CASE (FontFamilyNotFound);
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CASE (FontStyleNotFound);
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CASE (NotTrueTypeFont);
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CASE (UnsupportedGdiplusVersion);
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CASE (GdiplusNotInitialized);
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CASE (PropertyNotFound);
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CASE (PropertyNotSupported);
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CASE (ProfileNotFound);
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default:
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msg = "Unknown error";
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}
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g_set_error_literal (error, GDK_PIXBUF_ERROR, code, msg);
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}
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static gboolean
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gdip_init (void)
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{
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GdiplusStartupInput input;
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ULONG_PTR gdiplusToken = 0;
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static HINSTANCE gdipluslib = NULL;
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if (!gdipluslib)
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gdipluslib = LoadLibrary ("gdiplus.dll");
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else
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return TRUE; /* gdip_init() is idempotent */
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if (!gdipluslib)
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return FALSE;
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#define LOOKUP(func) \
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G_STMT_START { \
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func = (func##Func) GetProcAddress (gdipluslib, #func); \
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if (!func) {\
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g_warning ("Couldn't find GDI+ function %s\n", #func); \
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return FALSE; \
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} \
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} G_STMT_END
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LOOKUP (GdiplusStartup);
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LOOKUP (GdipCreateBitmapFromStream);
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LOOKUP (GdipBitmapGetPixel);
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LOOKUP (GdipGetImageHeight);
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LOOKUP (GdipDisposeImage);
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LOOKUP (GdipGetImageFlags);
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LOOKUP (GdipGetImageWidth);
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LOOKUP (GdipImageGetFrameCount);
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LOOKUP (GdipImageSelectActiveFrame);
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LOOKUP (GdipGetPropertyItemSize);
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LOOKUP (GdipGetPropertyItem);
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LOOKUP (GdipGetPropertyCount);
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LOOKUP (GdipGetPropertyIdList);
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LOOKUP (GdipCreateBitmapFromScan0);
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LOOKUP (GdipSaveImageToStream);
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LOOKUP (GdipBitmapSetPixel);
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LOOKUP (GdipDrawImageI);
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LOOKUP (GdipGetImageGraphicsContext);
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LOOKUP (GdipFlush);
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LOOKUP (GdipGraphicsClear);
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LOOKUP (GdipBitmapSetResolution);
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LOOKUP (GdipGetImageHorizontalResolution);
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LOOKUP (GdipGetImageVerticalResolution);
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LOOKUP (GdipLoadImageFromStream);
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LOOKUP (GdipDeleteGraphics);
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LOOKUP (GdipGetImageEncoders);
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LOOKUP (GdipGetImageEncodersSize);
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LOOKUP (GdipBitmapLockBits);
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LOOKUP (GdipBitmapUnlockBits);
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LOOKUP (GdipGetImagePixelFormat);
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LOOKUP (GdipCloneBitmapAreaI);
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#undef LOOKUP
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input.GdiplusVersion = 1;
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input.DebugEventCallback = NULL;
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input.SuppressBackgroundThread = input.SuppressExternalCodecs = FALSE;
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return (GdiplusStartup (&gdiplusToken, &input, NULL) == 0 ? TRUE : FALSE);
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}
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static gboolean
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GetEncoderClsid (const WCHAR *format, CLSID *pClsid)
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{
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UINT num, size;
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int j;
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ImageCodecInfo *pImageCodecInfo;
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if (Ok != GdipGetImageEncodersSize (&num, &size))
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return FALSE;
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pImageCodecInfo = (ImageCodecInfo *) g_malloc (size);
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if (Ok != GdipGetImageEncoders (num, size, pImageCodecInfo)) {
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g_free (pImageCodecInfo);
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return FALSE;
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}
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for (j = 0; j < num; j++) {
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if (wcscmp (pImageCodecInfo[j].MimeType, format) == 0) {
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*pClsid = pImageCodecInfo[j].Clsid;
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g_free (pImageCodecInfo);
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return TRUE;
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}
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}
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g_free (pImageCodecInfo);
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return FALSE;
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}
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static HGLOBAL
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gdip_buffer_to_hglobal (const gchar *buffer, size_t size, GError **error)
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{
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HGLOBAL hg = NULL;
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hg = GlobalAlloc (GPTR, size);
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if (!hg) {
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gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, GetLastError (), _("Could not allocate memory: %s"));
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return NULL;
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}
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CopyMemory (hg, buffer, size);
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return hg;
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}
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static gboolean
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gdip_save_bitmap_to_callback (GpBitmap *bitmap,
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const CLSID *format,
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const EncoderParameters *encoder_params,
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GdkPixbufSaveFunc save_func,
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gpointer user_data,
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GError **error)
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{
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HRESULT hr;
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IStream *streamOut = NULL;
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gboolean success = FALSE;
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guint64 zero = 0;
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GpStatus status;
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hr = CreateStreamOnHGlobal (NULL, TRUE, &streamOut);
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if (!SUCCEEDED (hr)) {
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gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not create stream: %s"));
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return FALSE;
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}
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status = GdipSaveImageToStream ((GpImage *)bitmap, streamOut, format, encoder_params);
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if (Ok != status) {
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gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
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IStream_Release (streamOut);
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return FALSE;
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}
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/* seek back to the beginning of the stream */
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hr = IStream_Seek (streamOut, *(LARGE_INTEGER *)&zero, STREAM_SEEK_SET, NULL);
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if (!SUCCEEDED (hr)) {
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gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not seek stream: %s"));
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IStream_Release (streamOut);
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return FALSE;
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}
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for (;;) {
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char buffer[LOAD_BUFFER_SIZE];
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ULONG nread;
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hr = IStream_Read (streamOut, buffer, sizeof(buffer), &nread);
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if (!SUCCEEDED (hr))
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{
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gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not read from stream: %s"));
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break;
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}
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else if (0 == nread) {
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success = TRUE; /* EOF */
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break;
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}
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else if (!(*save_func) (buffer, nread, error, user_data))
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break;
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}
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IStream_Release (streamOut);
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return success;
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}
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static GpBitmap *
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gdip_pixbuf_to_bitmap (GdkPixbuf *pixbuf)
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{
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GpBitmap *bitmap = NULL;
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int width, height, stride, n_channels;
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guint8 *pixels;
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width = gdk_pixbuf_get_width (pixbuf);
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height = gdk_pixbuf_get_height (pixbuf);
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stride = gdk_pixbuf_get_rowstride (pixbuf);
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n_channels = gdk_pixbuf_get_n_channels (pixbuf);
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pixels = gdk_pixbuf_get_pixels (pixbuf);
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if (n_channels == 3 || n_channels == 4) {
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/* rgbX. need to convert to argb. pass a null data to get an empty bitmap */
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GdipCreateBitmapFromScan0 (width, height, 0, PixelFormat32bppARGB, NULL, &bitmap);
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if (bitmap) {
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int x, y;
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x++) {
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ARGB p;
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guint8 alpha;
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guchar *base = pixels + (y * stride + (x * n_channels));
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if (n_channels == 4)
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alpha = base[3];
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else
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alpha = 0xff;
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if (alpha == 0)
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p = 0;
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else {
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guint8 red = base[0];
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guint8 green = base[1];
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guint8 blue = base[2];
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p = (alpha << 24) | (red << 16) | (green << 8) | (blue << 0);
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}
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GdipBitmapSetPixel (bitmap, x, y, p);
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}
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}
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}
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}
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else {
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g_warning ("Unsupported number of channels: %d\n", n_channels);
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}
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return bitmap;
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}
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static GpBitmap *
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gdip_buffer_to_bitmap (GdipContext *context, GError **error)
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{
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HRESULT hr;
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HGLOBAL hg = NULL;
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GpBitmap *bitmap = NULL;
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IStream *stream = NULL;
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GpStatus status;
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guint64 size64 = context->buffer->len;
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hg = gdip_buffer_to_hglobal (context->buffer->data, context->buffer->len, error);
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if (!hg)
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return NULL;
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hr = CreateStreamOnHGlobal (hg, FALSE, (LPSTREAM *)&stream);
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if (!SUCCEEDED (hr)) {
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gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not create stream: %s"));
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GlobalFree (hg);
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return NULL;
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}
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IStream_SetSize (stream, *(ULARGE_INTEGER *)&size64);
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status = GdipCreateBitmapFromStream (stream, &bitmap);
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if (Ok != status) {
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gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
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IStream_Release (stream);
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GlobalFree (hg);
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return NULL;
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}
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context->stream = stream;
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context->hg = hg;
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return bitmap;
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}
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static GpImage *
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gdip_buffer_to_image (GdipContext *context, GError **error)
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{
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HRESULT hr;
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HGLOBAL hg = NULL;
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GpImage *image = NULL;
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IStream *stream = NULL;
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GpStatus status;
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guint64 size64 = context->buffer->len;
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hg = gdip_buffer_to_hglobal (context->buffer->data, context->buffer->len, error);
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if (!hg)
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return NULL;
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hr = CreateStreamOnHGlobal (hg, FALSE, (LPSTREAM *)&stream);
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if (!SUCCEEDED (hr)) {
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gdip_set_error_from_hresult (error, GDK_PIXBUF_ERROR_FAILED, hr, _("Could not create stream: %s"));
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GlobalFree (hg);
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return NULL;
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}
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IStream_SetSize (stream, *(ULARGE_INTEGER *)&size64);
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status = GdipLoadImageFromStream (stream, &image);
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if (Ok != status) {
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gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
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IStream_Release (stream);
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GlobalFree (hg);
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return NULL;
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}
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context->stream = stream;
|
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context->hg = hg;
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|
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return image;
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}
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|
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static void
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gdip_bitmap_get_size (GpBitmap *bitmap, guint *width, guint *height)
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|
{
|
|
if (bitmap == NULL || width == NULL || height == NULL)
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return;
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|
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*width = *height = 0;
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|
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GdipGetImageWidth ((GpImage *) bitmap, width);
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GdipGetImageHeight ((GpImage *) bitmap, height);
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|
}
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|
|
static void
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gdip_bitmap_get_has_alpha (GpBitmap *bitmap, gboolean *has_alpha)
|
|
{
|
|
guint flags = 0;
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|
|
|
if (bitmap == NULL || has_alpha == NULL)
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return;
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|
|
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GdipGetImageFlags ((GpImage *) bitmap, &flags);
|
|
*has_alpha = (flags & ImageFlagsHasAlpha);
|
|
}
|
|
|
|
static gboolean
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gdip_bitmap_get_n_frames (GpBitmap *bitmap, guint *n_frames, gboolean timeDimension)
|
|
{
|
|
if (bitmap == NULL || n_frames == NULL)
|
|
return FALSE;
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|
|
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*n_frames = 1;
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|
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return (Ok == GdipImageGetFrameCount ((GpImage *) bitmap, (timeDimension ? &FrameDimensionTime : &FrameDimensionPage), n_frames));
|
|
}
|
|
|
|
static gboolean
|
|
gdip_bitmap_select_frame (GpBitmap *bitmap, guint frame, gboolean timeDimension)
|
|
{
|
|
if (bitmap == NULL)
|
|
return FALSE;
|
|
|
|
return (Ok == GdipImageSelectActiveFrame ((GpImage *)bitmap, (timeDimension ? &FrameDimensionTime : &FrameDimensionPage), frame));
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|
}
|
|
|
|
static gboolean
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|
gdip_bitmap_get_property_as_string (GpBitmap *bitmap, guint propertyId, gchar **str)
|
|
{
|
|
guint item_size;
|
|
gboolean success = FALSE;
|
|
|
|
if (bitmap == NULL || str == NULL)
|
|
return FALSE;
|
|
|
|
*str = 0;
|
|
|
|
if (Ok == GdipGetPropertyItemSize ((GpImage *)bitmap, propertyId, &item_size)) {
|
|
PropertyItem *item;
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|
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item = (PropertyItem *)g_try_malloc (item_size);
|
|
if (Ok == GdipGetPropertyItem ((GpImage *)bitmap, propertyId, item_size, item)) {
|
|
GString *gstr;
|
|
int i;
|
|
|
|
gstr = g_string_new (NULL);
|
|
|
|
success = TRUE;
|
|
switch (item->type) {
|
|
case PropertyTagTypeByte:
|
|
for (i = 0; i < item->length / sizeof(guint8); i++) {
|
|
guint8 *bytes = (guint8 *)item->value;
|
|
|
|
if (gstr->len != 0)
|
|
g_string_append_c(gstr, ',');
|
|
g_string_append_printf (gstr, "%u", (guint32)bytes[i]);
|
|
}
|
|
break;
|
|
|
|
case PropertyTagTypeASCII:
|
|
g_string_append_len (gstr, (const char *)item->value, item->length);
|
|
break;
|
|
|
|
case PropertyTagTypeShort:
|
|
for (i = 0; i < item->length / sizeof(guint16); i++) {
|
|
guint16 *shorts = (guint16 *)item->value;
|
|
|
|
if (gstr->len != 0)
|
|
g_string_append_c (gstr, ',');
|
|
g_string_append_printf (gstr, "%u", (guint32)shorts[i]);
|
|
}
|
|
break;
|
|
|
|
case PropertyTagTypeLong:
|
|
for (i = 0; i < item->length / sizeof(guint32); i++) {
|
|
guint32 *longs = (guint32 *)item->value;
|
|
|
|
if (gstr->len != 0)
|
|
g_string_append_c (gstr, ',');
|
|
g_string_append_printf (gstr, "%u", longs[i]);
|
|
}
|
|
break;
|
|
|
|
case PropertyTagTypeSLONG:
|
|
for (i = 0; i < item->length / sizeof(guint32); i++) {
|
|
gint32 *longs = (gint32 *)item->value;
|
|
|
|
if (gstr->len != 0)
|
|
g_string_append_c (gstr, ',');
|
|
g_string_append_printf (gstr, "%d", longs[i]);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
success = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (gstr->len > 0)
|
|
*str = g_string_free (gstr, FALSE);
|
|
else
|
|
g_string_free (gstr, TRUE);
|
|
}
|
|
|
|
g_free (item);
|
|
}
|
|
|
|
return success;
|
|
}
|
|
|
|
static gboolean
|
|
gdip_bitmap_get_frame_delay (GpBitmap *bitmap, guint *delay)
|
|
{
|
|
guint item_size;
|
|
gboolean success = FALSE;
|
|
|
|
if (bitmap == NULL || delay == NULL)
|
|
return FALSE;
|
|
|
|
*delay = 0;
|
|
|
|
if (Ok == GdipGetPropertyItemSize ((GpImage *)bitmap, PropertyTagFrameDelay, &item_size)) {
|
|
PropertyItem *item;
|
|
|
|
item = (PropertyItem *)g_try_malloc (item_size);
|
|
if (Ok == GdipGetPropertyItem ((GpImage *)bitmap, PropertyTagFrameDelay, item_size, item)) {
|
|
/* PropertyTagFrameDelay. Time delay, in hundredths of a second, between two frames in an animated GIF image. */
|
|
*delay = *((long *)item->value);
|
|
success = TRUE;
|
|
}
|
|
|
|
g_free (item);
|
|
}
|
|
|
|
return success;
|
|
}
|
|
|
|
static gboolean
|
|
gdip_bitmap_get_n_loops (GpBitmap *bitmap, guint *loops)
|
|
{
|
|
guint item_size;
|
|
gboolean success = FALSE;
|
|
|
|
if (bitmap == NULL || loops == NULL)
|
|
return FALSE;
|
|
|
|
*loops = 1;
|
|
|
|
/* PropertyTagLoopCount. 0 == infinitely */
|
|
if (Ok == GdipGetPropertyItemSize ((GpImage *)bitmap, PropertyTagLoopCount, &item_size)) {
|
|
PropertyItem *item;
|
|
|
|
item = (PropertyItem *)g_try_malloc (item_size);
|
|
if (Ok == GdipGetPropertyItem ((GpImage *)bitmap, PropertyTagLoopCount, item_size, item)) {
|
|
*loops = *((short *)item->value);
|
|
success = TRUE;
|
|
}
|
|
|
|
g_free (item);
|
|
}
|
|
|
|
return success;
|
|
}
|
|
|
|
static void
|
|
destroy_gdipcontext (GdipContext *context)
|
|
{
|
|
if (context != NULL) {
|
|
if (context->stream != NULL) {
|
|
IStream_Release(context->stream);
|
|
GlobalFree (context->hg);
|
|
}
|
|
g_byte_array_free (context->buffer, TRUE);
|
|
g_free (context);
|
|
}
|
|
}
|
|
|
|
static void
|
|
emit_updated (GdipContext *context, GdkPixbuf *pixbuf)
|
|
{
|
|
if (context->updated_func)
|
|
(*context->updated_func) (pixbuf,
|
|
0, 0,
|
|
gdk_pixbuf_get_width (pixbuf),
|
|
gdk_pixbuf_get_height (pixbuf),
|
|
context->user_data);
|
|
}
|
|
|
|
static void
|
|
emit_prepared (GdipContext *context, GdkPixbuf *pixbuf, GdkPixbufAnimation *anim)
|
|
{
|
|
if (context->prepared_func)
|
|
(*context->prepared_func) (pixbuf, anim, context->user_data);
|
|
}
|
|
|
|
static gpointer
|
|
gdk_pixbuf__gdip_image_begin_load (GdkPixbufModuleSizeFunc size_func,
|
|
GdkPixbufModulePreparedFunc prepared_func,
|
|
GdkPixbufModuleUpdatedFunc updated_func,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
GdipContext *context = g_new0 (GdipContext, 1);
|
|
|
|
context->size_func = size_func;
|
|
context->prepared_func = prepared_func;
|
|
context->updated_func = updated_func;
|
|
context->user_data = user_data;
|
|
context->buffer = g_byte_array_new ();
|
|
|
|
return context;
|
|
}
|
|
|
|
static gboolean
|
|
gdk_pixbuf__gdip_image_load_increment (gpointer data,
|
|
const guchar *buf, guint size,
|
|
GError **error)
|
|
{
|
|
GdipContext *context = (GdipContext *)data;
|
|
GByteArray *image_buffer = context->buffer;
|
|
|
|
g_byte_array_append (image_buffer, (guint8 *)buf, size);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GdkPixbuf *
|
|
gdip_bitmap_to_pixbuf (GpBitmap *bitmap, GError **error)
|
|
{
|
|
GdkPixbuf *pixbuf = NULL;
|
|
guchar *cursor = NULL;
|
|
gint rowstride;
|
|
gboolean has_alpha = FALSE;
|
|
gint n_channels = 0;
|
|
gchar *option;
|
|
|
|
guint width = 0, height = 0, x, y;
|
|
|
|
gdip_bitmap_get_size (bitmap, &width, &height);
|
|
gdip_bitmap_get_has_alpha (bitmap, &has_alpha);
|
|
|
|
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, has_alpha, 8, width, height);
|
|
|
|
if (!pixbuf) {
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY, _("Couldn't load bitmap"));
|
|
return NULL;
|
|
}
|
|
|
|
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
|
|
cursor = gdk_pixbuf_get_pixels (pixbuf);
|
|
n_channels = gdk_pixbuf_get_n_channels (pixbuf);
|
|
|
|
for (y = 0; y < height; y++) {
|
|
for (x = 0; x < width; x++) {
|
|
ARGB pixel;
|
|
GpStatus status;
|
|
guchar *b = cursor + (y * rowstride + (x * n_channels));
|
|
|
|
if (Ok != (status = GdipBitmapGetPixel (bitmap, x, y, &pixel))) {
|
|
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
|
|
g_object_unref (pixbuf);
|
|
return NULL;
|
|
}
|
|
|
|
b[0] = (pixel & 0xff0000) >> 16;
|
|
b[1] = (pixel & 0x00ff00) >> 8;
|
|
b[2] = (pixel & 0x0000ff) >> 0;
|
|
|
|
if (has_alpha)
|
|
b[3] = (pixel & 0xff000000) >> 24;
|
|
}
|
|
}
|
|
|
|
if (gdip_bitmap_get_property_as_string (bitmap, PropertyTagOrientation, &option)) {
|
|
gdk_pixbuf_set_option (pixbuf, "orientation", option);
|
|
g_free (option);
|
|
}
|
|
|
|
if (gdip_bitmap_get_property_as_string (bitmap, PropertyTagArtist, &option)) {
|
|
gdk_pixbuf_set_option (pixbuf, "Author", option);
|
|
g_free (option);
|
|
}
|
|
|
|
if (gdip_bitmap_get_property_as_string (bitmap, PropertyTagImageTitle, &option)) {
|
|
gdk_pixbuf_set_option (pixbuf, "Title", option);
|
|
g_free (option);
|
|
}
|
|
|
|
return pixbuf;
|
|
}
|
|
|
|
static gboolean
|
|
stop_load (GpBitmap *bitmap, GdipContext *context, GError **error)
|
|
{
|
|
guint n_frames = 1, i;
|
|
GdkPixbufGdipAnim *animation = NULL;
|
|
|
|
gdip_bitmap_get_n_frames (bitmap, &n_frames, TRUE);
|
|
|
|
for (i = 0; i < n_frames; i++) {
|
|
GdkPixbuf *pixbuf = NULL;
|
|
GdkPixbufFrame *frame;
|
|
guint frame_delay = 0;
|
|
|
|
gdip_bitmap_select_frame (bitmap, i, TRUE);
|
|
|
|
pixbuf = gdip_bitmap_to_pixbuf (bitmap, error);
|
|
|
|
if (!pixbuf) {
|
|
if (animation != NULL)
|
|
g_object_unref (G_OBJECT (animation));
|
|
|
|
GdipDisposeImage ((GpImage *)bitmap);
|
|
destroy_gdipcontext (context);
|
|
return FALSE;
|
|
}
|
|
|
|
if (animation == NULL) {
|
|
guint n_loops = 1;
|
|
|
|
animation = g_object_new (GDK_TYPE_PIXBUF_GDIP_ANIM, NULL);
|
|
gdip_bitmap_get_n_loops (bitmap, &n_loops);
|
|
animation->loop = n_loops;
|
|
}
|
|
|
|
frame = g_new (GdkPixbufFrame, 1);
|
|
frame->pixbuf = pixbuf;
|
|
|
|
gdip_bitmap_get_frame_delay (bitmap, &frame_delay);
|
|
|
|
animation->n_frames++;
|
|
animation->frames = g_list_append (animation->frames, frame);
|
|
|
|
animation->width = gdk_pixbuf_get_width (pixbuf);
|
|
animation->height = gdk_pixbuf_get_height (pixbuf);
|
|
|
|
/* GIF delay is in hundredths, we want thousandths */
|
|
frame->delay_time = frame_delay * 10;
|
|
frame->elapsed = animation->total_time;
|
|
|
|
/* Some GIFs apparently have delay time of 0,
|
|
* that crashes everything so set it to "fast".
|
|
* Also, timeouts less than 20 or so just lock up
|
|
* the app or make the animation choppy, so fix them.
|
|
*/
|
|
if (frame->delay_time < 20)
|
|
frame->delay_time = 20; /* 20 = "fast" */
|
|
|
|
animation->total_time += frame->delay_time;
|
|
|
|
if (i == 0)
|
|
emit_prepared (context, pixbuf, GDK_PIXBUF_ANIMATION (animation));
|
|
|
|
emit_updated (context, pixbuf);
|
|
}
|
|
|
|
if (animation != NULL)
|
|
g_object_unref (G_OBJECT (animation));
|
|
|
|
GdipDisposeImage ((GpImage *)bitmap);
|
|
destroy_gdipcontext (context);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gdk_pixbuf__gdip_image_stop_load (gpointer data, GError **error)
|
|
{
|
|
GdipContext *context = (GdipContext *)data;
|
|
GpBitmap *bitmap = NULL;
|
|
|
|
bitmap = gdip_buffer_to_bitmap (context, error);
|
|
|
|
if (!bitmap) {
|
|
destroy_gdipcontext (context);
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_CORRUPT_IMAGE, _("Couldn't load bitmap"));
|
|
return FALSE;
|
|
}
|
|
|
|
return stop_load (bitmap, context, error);
|
|
}
|
|
|
|
static gboolean
|
|
gdk_pixbuf__gdip_image_stop_vector_load (gpointer data, GError **error)
|
|
{
|
|
GdipContext *context = (GdipContext *)data;
|
|
|
|
GpImage *metafile;
|
|
GpGraphics *graphics;
|
|
GpBitmap *bitmap;
|
|
GpStatus status;
|
|
float metafile_xres, metafile_yres;
|
|
guint width, height;
|
|
|
|
metafile = gdip_buffer_to_image (context, error);
|
|
if (!metafile) {
|
|
destroy_gdipcontext (context);
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_CORRUPT_IMAGE, _("Couldn't load metafile"));
|
|
return FALSE;
|
|
}
|
|
|
|
GdipGetImageWidth (metafile, &width);
|
|
GdipGetImageHeight (metafile, &height);
|
|
|
|
status = GdipCreateBitmapFromScan0 (width, height, 0, PixelFormat32bppARGB, NULL, &bitmap);
|
|
if (Ok != status) {
|
|
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
|
|
GdipDisposeImage (metafile);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
GdipGetImageHorizontalResolution (metafile, &metafile_xres);
|
|
GdipGetImageVerticalResolution (metafile, &metafile_yres);
|
|
GdipBitmapSetResolution (bitmap, metafile_xres, metafile_yres);
|
|
|
|
status = GdipGetImageGraphicsContext ((GpImage *)bitmap, &graphics);
|
|
if (Ok != status) {
|
|
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
|
|
GdipDisposeImage ((GpImage *)bitmap);
|
|
GdipDisposeImage (metafile);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* gotta clear the bitmap */
|
|
GdipGraphicsClear (graphics, 0xffffffff);
|
|
|
|
status = GdipDrawImageI (graphics, metafile, 0, 0);
|
|
if (Ok != status) {
|
|
gdip_set_error_from_gpstatus (error, GDK_PIXBUF_ERROR_FAILED, status);
|
|
GdipDeleteGraphics (graphics);
|
|
GdipDisposeImage ((GpImage *)bitmap);
|
|
GdipDisposeImage (metafile);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
GdipFlush (graphics, 1);
|
|
|
|
GdipDeleteGraphics (graphics);
|
|
GdipDisposeImage (metafile);
|
|
|
|
return stop_load (bitmap, context, error);
|
|
}
|
|
|
|
static void
|
|
gdip_animation_prepare (GdkPixbuf *pixbuf,
|
|
GdkPixbufAnimation *animation,
|
|
gpointer user_data)
|
|
{
|
|
GdkPixbufAnimation **anim;
|
|
|
|
anim = (GdkPixbufAnimation **)user_data;
|
|
|
|
/* save a reference to the animation */
|
|
g_object_ref (animation);
|
|
*anim = animation;
|
|
}
|
|
|
|
static GdkPixbufAnimation *
|
|
gdk_pixbuf__gdip_image_load_animation (FILE *file,
|
|
GError **error)
|
|
{
|
|
GdkPixbufAnimation *animation = NULL;
|
|
|
|
gpointer context;
|
|
char buffer[LOAD_BUFFER_SIZE];
|
|
size_t length;
|
|
|
|
context = gdk_pixbuf__gdip_image_begin_load (NULL, gdip_animation_prepare, NULL, &animation, error);
|
|
|
|
while (!feof (file) && !ferror (file)) {
|
|
length = fread (buffer, 1, sizeof (buffer), file);
|
|
if (length > 0) {
|
|
if (!gdk_pixbuf__gdip_image_load_increment (context, buffer, length, error)) {
|
|
gdk_pixbuf__gdip_image_stop_load (context, NULL);
|
|
|
|
if (animation)
|
|
g_object_unref (animation);
|
|
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!gdk_pixbuf__gdip_image_stop_load(context, error)) {
|
|
if (animation)
|
|
g_object_unref (animation);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
return animation;
|
|
}
|
|
|
|
gboolean
|
|
gdip_save_to_file_callback (const gchar *buf,
|
|
gsize count,
|
|
GError **error,
|
|
gpointer data)
|
|
{
|
|
FILE *filehandle = data;
|
|
gsize n;
|
|
|
|
n = fwrite (buf, 1, count, filehandle);
|
|
if (n != count) {
|
|
gint save_errno = errno;
|
|
g_set_error (error,
|
|
G_FILE_ERROR,
|
|
g_file_error_from_errno (save_errno),
|
|
_("Error writing to image file: %s"),
|
|
g_strerror (save_errno));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
gdip_fill_vtable (GdkPixbufModule *module)
|
|
{
|
|
if (gdip_init ()) {
|
|
module->begin_load = gdk_pixbuf__gdip_image_begin_load;
|
|
module->stop_load = gdk_pixbuf__gdip_image_stop_load;
|
|
module->load_increment = gdk_pixbuf__gdip_image_load_increment;
|
|
|
|
/* this is the only way to get gtk_image_new_from_file() to load animations. it regrettably
|
|
does not use the GdkPixbufLoader interface. */
|
|
module->load_animation = gdk_pixbuf__gdip_image_load_animation;
|
|
}
|
|
}
|
|
|
|
void
|
|
gdip_fill_vector_vtable (GdkPixbufModule *module)
|
|
{
|
|
if (gdip_init ()) {
|
|
module->begin_load = gdk_pixbuf__gdip_image_begin_load;
|
|
module->stop_load = gdk_pixbuf__gdip_image_stop_vector_load;
|
|
module->load_increment = gdk_pixbuf__gdip_image_load_increment;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gdip_save_pixbuf (GdkPixbuf *pixbuf,
|
|
const WCHAR *format,
|
|
const EncoderParameters *encoder_params,
|
|
GdkPixbufSaveFunc save_func,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
GpBitmap *image;
|
|
CLSID clsid;
|
|
gboolean success;
|
|
|
|
if (!GetEncoderClsid (format, &clsid)) {
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_FAILED, _("Unsupported image format for GDI+"));
|
|
return FALSE;
|
|
}
|
|
|
|
image = gdip_pixbuf_to_bitmap (pixbuf);
|
|
|
|
if (image == NULL) {
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_FAILED, _("Couldn't save"));
|
|
return FALSE;
|
|
}
|
|
|
|
success = gdip_save_bitmap_to_callback (image, &clsid, encoder_params, save_func, user_data, error);
|
|
|
|
GdipDisposeImage ((GpImage *)image);
|
|
|
|
return success;
|
|
}
|