gtk2/gdk-pixbuf/io-ico.c
Havoc Pennington e0fee22e78 Add built marshaller files to support GdkPixbufLoader signals
2001-01-22  Havoc Pennington  <hp@redhat.com>

	* Makefile.am: Add built marshaller files to support
	GdkPixbufLoader signals

	* gdk-pixbuf-io.c (gdk_pixbuf_load_module): have
	GDK_PIXBUF_MODULEDIR unconditionally replace the compiled-in
	module location, rather than acting as a fallback, because we are
	using GDK_PIXBUF_MODULEDIR to use gdk-pixbuf before installing it.

	* gdk-pixbuf.h: include gdk-pixbuf-loader.h

        * gdk-pixbuf-loader.h, gdk-pixbuf-loader.c: Move back over here
	from gtk, and add error to close(), because stop_load may do
	parsing of the image.

	* pixops/have_mmx.S (_pixops_have_mmx): add newline at end of file

        * io-*.c: make individual operations static, and add fill_vtable
	functions which are exported. Fix the collection of type warnings
	that surfaced, including a number of functions that didn't
	properly take a GError and some that weren't
	const-correct. Involved adding error handling for a few loaders.

	* gdk-pixbuf-io.h: Add error reporting to stop_load function

	* gdk-pixbuf-io.c (gdk_pixbuf_load_module): change to just look up
	a function that fills in the GdkPixbufModule vtable, instead of
	looking up all the image functions individually; this means we
	can get type safety within modules for the loader functions.
	Also it means you don't have to keep the statically compiled and
	GModule versions in sync.

	* test-gdk-pixbuf.c (main): remove gdk_pixbuf_init()

	* make-inline-pixbuf.c (main): remove call to gdk_pixbuf_init()

	* gdk-pixbuf.h: nuke gdk_pixbuf_init()

	* gdk-pixbuf-animation.c (gdk_pixbuf_frame_get_type): g_type_init
	() here

	* gdk-pixbuf.c (gdk_pixbuf_get_type): g_type_init () here

	* gdk-pixbuf-animation.c (gdk_pixbuf_animation_get_type):
	g_type_init() here


2001-01-22  Havoc Pennington  <hp@redhat.com>

	* demos/testanimation.c: fix to reflect gdk-pixbuf changes

	* demos/testpixbuf.c: fix to reflect gdk-pixbuf changes

	* gtk/gdk-pixbuf-loader.c, gtk/gdk-pixbuf-loader.h:
	Remove, move back to gdk-pixbuf

	* gtk/gtktextiter.c, gtk/gtktextiter.h: add sentence equivalents
	to all the word functions

	* gtk/gtktextview.c (gtk_text_view_start_cursor_blink): return
	before doing anything on NULL layout or if we don't have the focus

	* gtk/testtext.c (fill_example_buffer): "justification"

	* gtk/gtktexttag.h, gtk/gtktexttag.c: change the tag attribute
	to be called "justification" not "justify"

	* demos/gtk-demo/textview.c (create_tags): "justification"

	* gtk/gtktextlayout.c (set_para_values): Handle char-wise wrapping
2001-01-22 23:09:48 +00:00

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/* GdkPixbuf library - Windows Icon/Cursor image loader
*
* Copyright (C) 1999 The Free Software Foundation
*
* Authors: Arjan van de Ven <arjan@fenrus.demon.nl>
* Federico Mena-Quintero <federico@gimp.org>
*
* Based on io-bmp.c
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#undef DUMPBIH
/*
Icons are just like BMP's, except for the header.
Known bugs:
* bi-tonal files aren't tested
*/
#include <config.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include "gdk-pixbuf-private.h"
#include "gdk-pixbuf-io.h"
/*
These structures are actually dummies. These are according to
the "Windows API reference guide volume II" as written by
Borland International, but GCC fiddles with the alignment of
the internal members.
*/
struct BitmapFileHeader {
gushort bfType;
guint bfSize;
guint reserverd;
guint bfOffbits;
};
struct BitmapInfoHeader {
guint biSize;
guint biWidth;
guint biHeight;
gushort biPlanes;
gushort biBitCount;
guint biCompression;
guint biSizeImage;
guint biXPelsPerMeter;
guint biYPelsPerMeter;
guint biClrUsed;
guint biClrImportant;
};
#ifdef DUMPBIH
/*
DumpBIH printf's the values in a BitmapInfoHeader to the screen, for
debugging purposes.
*/
static void DumpBIH(unsigned char *BIH)
{
printf("biSize = %i \n",
(int)(BIH[3] << 24) + (BIH[2] << 16) + (BIH[1] << 8) + (BIH[0]));
printf("biWidth = %i \n",
(int)(BIH[7] << 24) + (BIH[6] << 16) + (BIH[5] << 8) + (BIH[4]));
printf("biHeight = %i \n",
(int)(BIH[11] << 24) + (BIH[10] << 16) + (BIH[9] << 8) +
(BIH[8]));
printf("biPlanes = %i \n", (int)(BIH[13] << 8) + (BIH[12]));
printf("biBitCount = %i \n", (int)(BIH[15] << 8) + (BIH[14]));
printf("biCompress = %i \n",
(int)(BIH[19] << 24) + (BIH[18] << 16) + (BIH[17] << 8) +
(BIH[16]));
printf("biSizeImage = %i \n",
(int)(BIH[23] << 24) + (BIH[22] << 16) + (BIH[21] << 8) +
(BIH[20]));
printf("biXPels = %i \n",
(int)(BIH[27] << 24) + (BIH[26] << 16) + (BIH[25] << 8) +
(BIH[24]));
printf("biYPels = %i \n",
(int)(BIH[31] << 24) + (BIH[30] << 16) + (BIH[29] << 8) +
(BIH[28]));
printf("biClrUsed = %i \n",
(int)(BIH[35] << 24) + (BIH[34] << 16) + (BIH[33] << 8) +
(BIH[32]));
printf("biClrImprtnt= %i \n",
(int)(BIH[39] << 24) + (BIH[38] << 16) + (BIH[37] << 8) +
(BIH[36]));
}
#endif
/* Progressive loading */
struct headerpair {
guint width;
guint height;
guint depth;
guint Negative; /* Negative = 1 -> top down BMP,
Negative = 0 -> bottom up BMP */
};
struct ico_progressive_state {
ModulePreparedNotifyFunc prepared_func;
ModuleUpdatedNotifyFunc updated_func;
gpointer user_data;
gint HeaderSize; /* The size of the header-part (incl colormap) */
guchar *HeaderBuf; /* The buffer for the header (incl colormap) */
gint BytesInHeaderBuf; /* The size of the allocated HeaderBuf */
gint HeaderDone; /* The nr of bytes actually in HeaderBuf */
gint LineWidth; /* The width of a line in bytes */
guchar *LineBuf; /* Buffer for 1 line */
gint LineDone; /* # of bytes in LineBuf */
gint Lines; /* # of finished lines */
gint Type; /*
24 = RGB
8 = 8 bit colormapped
1 = 1 bit bitonal
*/
struct headerpair Header; /* Decoded (BE->CPU) header */
gint DIBoffset;
gint ImageScore;
GdkPixbuf *pixbuf; /* Our "target" */
};
static gpointer
gdk_pixbuf__ico_image_begin_load(ModulePreparedNotifyFunc prepared_func,
ModuleUpdatedNotifyFunc updated_func,
ModuleFrameDoneNotifyFunc frame_done_func,
ModuleAnimationDoneNotifyFunc anim_done_func,
gpointer user_data,
GError **error);
static gboolean gdk_pixbuf__ico_image_stop_load(gpointer data, GError **error);
static gboolean gdk_pixbuf__ico_image_load_increment(gpointer data,
const guchar * buf, guint size,
GError **error);
/* Shared library entry point --> Can go when generic_image_load
enters gdk-pixbuf-io */
static GdkPixbuf *
gdk_pixbuf__ico_image_load(FILE * f, GError **error)
{
guchar *membuf;
size_t length;
struct ico_progressive_state *State;
GdkPixbuf *pb;
State = gdk_pixbuf__ico_image_begin_load(NULL, NULL, NULL,
NULL, NULL, error);
if (State == NULL)
return NULL;
membuf = g_malloc(4096);
g_assert(membuf != NULL);
while (feof(f) == 0) {
length = fread(membuf, 1, 4096, f);
if (length > 0)
if (!gdk_pixbuf__ico_image_load_increment(State, membuf, length,
error)) {
gdk_pixbuf__ico_image_stop_load (State, NULL);
return NULL;
}
}
g_free(membuf);
if (State->pixbuf != NULL)
gdk_pixbuf_ref(State->pixbuf);
pb = State->pixbuf;
gdk_pixbuf__ico_image_stop_load(State, NULL);
return pb;
}
static void DecodeHeader(guchar *Data, gint Bytes,
struct ico_progressive_state *State)
{
/* For ICO's we have to be very clever. There are multiple images possible
in an .ICO. For now, we select (in order of priority):
1) The one with the highest number of colors
2) The largest one
*/
gint IconCount = 0; /* The number of icon-versions in the file */
guchar *BIH; /* The DIB for the used icon */
guchar *Ptr;
gint I;
/* Step 1: The ICO header */
IconCount = (Data[5] << 8) + (Data[4]);
State->HeaderSize = 6 + IconCount*16;
if (State->HeaderSize>State->BytesInHeaderBuf) {
State->HeaderBuf=g_realloc(State->HeaderBuf,State->HeaderSize);
State->BytesInHeaderBuf = State->HeaderSize;
}
if (Bytes < State->HeaderSize)
return;
/* We now have all the "short-specs" of the versions
So we iterate through them and select the best one */
State->ImageScore = 0;
State->DIBoffset = 0;
Ptr = Data + 6;
for (I=0;I<IconCount;I++) {
int ThisWidth, ThisHeight,ThisColors;
int ThisScore;
ThisWidth = Ptr[0];
ThisHeight = Ptr[1];
ThisColors = (Ptr[2]);
if (ThisColors==0)
ThisColors=256; /* Yes, this is in the spec, ugh */
ThisScore = ThisColors*1024+ThisWidth*ThisHeight;
if (ThisScore>State->ImageScore) {
State->ImageScore = ThisScore;
State->DIBoffset = (Ptr[15]<<24)+(Ptr[14]<<16)+
(Ptr[13]<<8) + (Ptr[12]);
}
Ptr += 16;
}
/* We now have a winner, pointed to in State->DIBoffset,
so we know how many bytes are in the "header" part. */
State->HeaderSize = State->DIBoffset + 40; /* 40 = sizeof(InfoHeader) */
if (State->HeaderSize>State->BytesInHeaderBuf) {
State->HeaderBuf=g_realloc(State->HeaderBuf,State->HeaderSize);
State->BytesInHeaderBuf = State->HeaderSize;
}
if (Bytes<State->HeaderSize)
return;
BIH = Data+State->DIBoffset;
#ifdef DUMPBIH
DumpBIH(BIH);
#endif
/* Add the palette to the headersize */
State->Header.width =
(int)(BIH[7] << 24) + (BIH[6] << 16) + (BIH[5] << 8) + (BIH[4]);
State->Header.height =
(int)(BIH[11] << 24) + (BIH[10] << 16) + (BIH[9] << 8) + (BIH[8])/2;
/* /2 because the BIH height includes the transparency mask */
State->Header.depth = (BIH[15] << 8) + (BIH[14]);;
State->Type = State->Header.depth;
if (State->Lines>=State->Header.height)
State->Type = 1; /* The transparency mask is 1 bpp */
/* Determine the palette size. If the header indicates 0, it
is actually the maximum for the bpp. You have to love the
guys who made the spec. */
I = (int)(BIH[35] << 24) + (BIH[34] << 16) + (BIH[33] << 8) + (BIH[32]);
I = I*4;
if ((I==0)&&(State->Type==1))
I = 2*4;
if ((I==0)&&(State->Type==4))
I = 16*4;
if ((I==0)&&(State->Type==8))
I = 256*4;
State->HeaderSize+=I;
if (State->HeaderSize>State->BytesInHeaderBuf) {
State->HeaderBuf=g_realloc(State->HeaderBuf,State->HeaderSize);
State->BytesInHeaderBuf = State->HeaderSize;
}
if (Bytes < State->HeaderSize)
return;
if ((BIH[16] != 0) || (BIH[17] != 0) || (BIH[18] != 0)
|| (BIH[19] != 0)) {
g_assert(0); /* Compressed icons aren't allowed */
}
/* Negative heights mean top-down pixel-order */
if (State->Header.height < 0) {
State->Header.height = -State->Header.height;
State->Header.Negative = 1;
}
if (State->Header.width < 0) {
State->Header.width = -State->Header.width;
}
if (State->Type == 24)
State->LineWidth = State->Header.width * 3;
if (State->Type == 8)
State->LineWidth = State->Header.width * 1;
if (State->Type == 4) {
State->LineWidth = (State->Header.width+1)/2;
}
if (State->Type == 1) {
State->LineWidth = State->Header.width / 8;
if ((State->Header.width & 7) != 0)
State->LineWidth++;
}
/* Pad to a 32 bit boundary */
if (((State->LineWidth % 4) > 0))
State->LineWidth = (State->LineWidth / 4) * 4 + 4;
if (State->LineBuf == NULL)
State->LineBuf = g_malloc(State->LineWidth);
g_assert(State->LineBuf != NULL);
if (State->pixbuf == NULL) {
State->pixbuf =
gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8,
(gint) State->Header.width,
(gint) State->Header.height);
if (State->prepared_func != NULL)
/* Notify the client that we are ready to go */
(*State->prepared_func) (State->pixbuf,
State->user_data);
}
}
/*
* func - called when we have pixmap created (but no image data)
* user_data - passed as arg 1 to func
* return context (opaque to user)
*/
static gpointer
gdk_pixbuf__ico_image_begin_load(ModulePreparedNotifyFunc prepared_func,
ModuleUpdatedNotifyFunc updated_func,
ModuleFrameDoneNotifyFunc frame_done_func,
ModuleAnimationDoneNotifyFunc anim_done_func,
gpointer user_data,
GError **error)
{
struct ico_progressive_state *context;
context = g_new0(struct ico_progressive_state, 1);
context->prepared_func = prepared_func;
context->updated_func = updated_func;
context->user_data = user_data;
context->HeaderSize = 54;
context->HeaderBuf = g_malloc(14 + 40 + 4*256 + 512);
/* 4*256 for the colormap */
context->BytesInHeaderBuf = 14 + 40 + 4*256 + 512 ;
context->HeaderDone = 0;
context->LineWidth = 0;
context->LineBuf = NULL;
context->LineDone = 0;
context->Lines = 0;
context->Type = 0;
memset(&context->Header, 0, sizeof(struct headerpair));
context->pixbuf = NULL;
return (gpointer) context;
}
/*
* context - returned from image_begin_load
*
* free context, unref gdk_pixbuf
*/
gboolean gdk_pixbuf__ico_image_stop_load(gpointer data,
GError **error)
{
struct ico_progressive_state *context =
(struct ico_progressive_state *) data;
/* FIXME this thing needs to report errors if
* we have unused image data
*/
g_return_val_if_fail(context != NULL, TRUE);
if (context->LineBuf != NULL)
g_free(context->LineBuf);
context->LineBuf = NULL;
if (context->HeaderBuf != NULL)
g_free(context->HeaderBuf);
if (context->pixbuf)
gdk_pixbuf_unref(context->pixbuf);
g_free(context);
return TRUE;
}
static void OneLine24(struct ico_progressive_state *context)
{
gint X;
guchar *Pixels;
X = 0;
if (context->Header.Negative == 0)
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
(context->Header.height - context->Lines - 1));
else
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
context->Lines);
while (X < context->Header.width) {
Pixels[X * 4 + 0] = context->LineBuf[X * 3 + 2];
Pixels[X * 4 + 1] = context->LineBuf[X * 3 + 1];
Pixels[X * 4 + 2] = context->LineBuf[X * 3 + 0];
X++;
}
}
static void OneLine8(struct ico_progressive_state *context)
{
gint X;
guchar *Pixels;
X = 0;
if (context->Header.Negative == 0)
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
(context->Header.height - context->Lines - 1));
else
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
context->Lines);
while (X < context->Header.width) {
/* The joys of having a BGR byteorder */
Pixels[X * 4 + 0] =
context->HeaderBuf[4 * context->LineBuf[X] + 42+context->DIBoffset];
Pixels[X * 4 + 1] =
context->HeaderBuf[4 * context->LineBuf[X] + 41+context->DIBoffset];
Pixels[X * 4 + 2] =
context->HeaderBuf[4 * context->LineBuf[X] + 40+context->DIBoffset];
X++;
}
}
static void OneLine4(struct ico_progressive_state *context)
{
gint X;
guchar *Pixels;
X = 0;
if (context->Header.Negative == 0)
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
(context->Header.height - context->Lines - 1));
else
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
context->Lines);
while (X < context->Header.width) {
guchar Pix;
Pix = context->LineBuf[X/2];
Pixels[X * 4 + 0] =
context->HeaderBuf[4 * (Pix>>4) + 42+context->DIBoffset];
Pixels[X * 4 + 1] =
context->HeaderBuf[4 * (Pix>>4) + 41+context->DIBoffset];
Pixels[X * 4 + 2] =
context->HeaderBuf[4 * (Pix>>4) + 40+context->DIBoffset];
X++;
if (X<context->Header.width) {
/* Handle the other 4 bit pixel only when there is one */
Pixels[X * 4 + 0] =
context->HeaderBuf[4 * (Pix&15) + 42+context->DIBoffset];
Pixels[X * 4 + 1] =
context->HeaderBuf[4 * (Pix&15) + 41+context->DIBoffset];
Pixels[X * 4 + 2] =
context->HeaderBuf[4 * (Pix&15) + 40+context->DIBoffset];
X++;
}
}
}
static void OneLine1(struct ico_progressive_state *context)
{
gint X;
guchar *Pixels;
X = 0;
if (context->Header.Negative == 0)
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
(context->Header.height - context->Lines - 1));
else
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
context->Lines);
while (X < context->Header.width) {
int Bit;
Bit = (context->LineBuf[X / 8]) >> (7 - (X & 7));
Bit = Bit & 1;
/* The joys of having a BGR byteorder */
Pixels[X * 4 + 0] = Bit*255;
Pixels[X * 4 + 1] = Bit*255;
Pixels[X * 4 + 2] = Bit*255;
X++;
}
}
static void OneLineTransp(struct ico_progressive_state *context)
{
gint X;
guchar *Pixels;
X = 0;
if (context->Header.Negative == 0)
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
(2*context->Header.height - context->Lines - 1));
else
Pixels = (context->pixbuf->pixels +
context->pixbuf->rowstride *
(context->Lines-context->Header.height));
while (X < context->Header.width) {
int Bit;
Bit = (context->LineBuf[X / 8]) >> (7 - (X & 7));
Bit = Bit & 1;
/* The joys of having a BGR byteorder */
Pixels[X * 4 + 3] = 255-Bit*255;
#if 0
if (Bit){
Pixels[X*4+0] = 255;
Pixels[X*4+1] = 255;
} else {
Pixels[X*4+0] = 0;
Pixels[X*4+1] = 0;
}
#endif
X++;
}
}
static void OneLine(struct ico_progressive_state *context)
{
context->LineDone = 0;
if (context->Lines >= context->Header.height*2) {
return;
}
if (context->Lines <context->Header.height) {
if (context->Type == 24)
OneLine24(context);
if (context->Type == 8)
OneLine8(context);
if (context->Type == 4)
OneLine4(context);
if (context->Type == 1)
OneLine1(context);
} else
{
OneLineTransp(context);
}
context->Lines++;
if (context->Lines>=context->Header.height) {
context->Type = 1;
context->LineWidth = context->Header.width / 8;
if ((context->Header.width & 7) != 0)
context->LineWidth++;
/* Pad to a 32 bit boundary */
if (((context->LineWidth % 4) > 0))
context->LineWidth = (context->LineWidth / 4) * 4 + 4;
}
if (context->updated_func != NULL) {
(*context->updated_func) (context->pixbuf,
0,
context->Lines,
context->Header.width,
context->Header.height,
context->user_data);
}
}
/*
* context - from image_begin_load
* buf - new image data
* size - length of new image data
*
* append image data onto inrecrementally built output image
*/
static gboolean
gdk_pixbuf__ico_image_load_increment(gpointer data,
const guchar * buf,
guint size,
GError **error)
{
struct ico_progressive_state *context =
(struct ico_progressive_state *) data;
gint BytesToCopy;
while (size > 0) {
g_assert(context->LineDone >= 0);
if (context->HeaderDone < context->HeaderSize) { /* We still
have headerbytes to do */
BytesToCopy =
context->HeaderSize - context->HeaderDone;
if (BytesToCopy > size)
BytesToCopy = size;
memmove(context->HeaderBuf + context->HeaderDone,
buf, BytesToCopy);
size -= BytesToCopy;
buf += BytesToCopy;
context->HeaderDone += BytesToCopy;
} else
{
BytesToCopy =
context->LineWidth - context->LineDone;
if (BytesToCopy > size)
BytesToCopy = size;
if (BytesToCopy > 0) {
memmove(context->LineBuf +
context->LineDone, buf,
BytesToCopy);
size -= BytesToCopy;
buf += BytesToCopy;
context->LineDone += BytesToCopy;
}
if ((context->LineDone >= context->LineWidth) &&
(context->LineWidth > 0))
OneLine(context);
}
if (context->HeaderDone >= 6)
DecodeHeader(context->HeaderBuf,
context->HeaderDone, context);
}
return TRUE;
}
void
gdk_pixbuf__ico_fill_vtable (GdkPixbufModule *module)
{
module->load = gdk_pixbuf__ico_image_load;
module->begin_load = gdk_pixbuf__ico_image_begin_load;
module->stop_load = gdk_pixbuf__ico_image_stop_load;
module->load_increment = gdk_pixbuf__ico_image_load_increment;
}