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Finished initial cut at the object.

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1999-10-26  Jonathan Blandford  <jrb@redhat.com>

	* src/gdk-pixbuf-loader.c: Finished initial cut at the object.
This commit is contained in:
Jonathan Blandford 1999-10-26 23:19:49 +00:00 committed by Jonathan Blandford
parent 3589986260
commit 2ff92119aa
6 changed files with 259 additions and 12 deletions
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4
gdk-pixbuf/ChangeLog
View File

@ -1,3 +1,7 @@
1999-10-26 Jonathan Blandford <jrb@redhat.com>
* src/gdk-pixbuf-loader.c: Finished initial cut at the object.
1999-10-26 Havoc Pennington <hp@pobox.com>
* src/gdk-pixbuf-loader.h: fix signals

3
gdk-pixbuf/gdk-pixbuf-io.h
View File

@ -39,8 +39,7 @@ struct _ModuleType {
/* Incremental loading */
gpointer (* begin_load) (ModulePreparedNotifyFunc func, gpointer user_data);
void (* stop_load) (gpointer context);
void (* load_increment)(gpointer context, guchar *buf, guint size);
GdkPixbuf *(* get_pixbuf) (gpointer context);
gboolean (* load_increment)(gpointer context, guchar *buf, guint size);
};

130
gdk-pixbuf/gdk-pixbuf-loader.c
View File

@ -26,6 +26,12 @@
#include "gdk-pixbuf-loader.h"
#include "gdk-pixbuf-io.h"
enum {
AREA_UPDATED,
AREA_PREPARED,
CLOSED,
LAST_SIGNAL
};
static GtkObjectClass *parent_class;
@ -34,6 +40,7 @@ static void gdk_pixbuf_loader_init (GdkPixbufLoader *loader);
static void gdk_pixbuf_loader_destroy (GtkObject *loader);
static void gdk_pixbuf_loader_finalize (GtkObject *loader);
/* Internal data */
typedef struct _GdkPixbufLoaderPrivate GdkPixbufLoaderPrivate;
struct _GdkPixbufLoaderPrivate
@ -43,7 +50,34 @@ struct _GdkPixbufLoaderPrivate
gchar buf[128];
gint buf_offset;
ModuleType *image_module;
gpointer context;
};
static guint pixbuf_loader_signals[LAST_SIGNAL] = { 0 };
/* our marshaller */
typedef void (*GtkSignal_NONE__INT_INT_INT_INT) (GtkObject * object,
gint arg1,
gpointer arg2,
gint arg3,
gint arg4,
gint arg5,
gpointer user_data);
void
gtk_marshal_NONE__INT_INT_INT_INT (GtkObject * object,
GtkSignalFunc func,
gpointer func_data,
GtkArg * args)
{
GtkSignal_NONE__INT_INT_INT_INT rfunc;
rfunc = (GtkSignal_NONE__INT_INT_INT_INT) func;
(*rfunc) (object,
GTK_VALUE_INT (args[0]),
GTK_VALUE_INT (args[1]),
GTK_VALUE_INT (args[2]),
GTK_VALUE_INT (args[3]),
func_data);
}
GtkType
gdk_pixbuf_loader_get_type (void)
@ -73,6 +107,32 @@ gdk_pixbuf_loader_class_init (GdkPixbufLoaderClass *klass)
{
parent_class = GTK_OBJECT_CLASS (klass);
pixbuf_loader_signals[AREA_PREPARED] =
gtk_signal_new ("area_prepared",
GTK_RUN_LAST,
parent_class->type,
GTK_SIGNAL_OFFSET (GdkPixbufLoaderClass, area_prepared),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
pixbuf_loader_signals[AREA_UPDATED] =
gtk_signal_new ("area_updated",
GTK_RUN_LAST,
parent_class->type,
GTK_SIGNAL_OFFSET (GdkPixbufLoaderClass, area_updated),
gtk_marshal_NONE__INT_INT_INT_INT,
GTK_TYPE_NONE, 4, GTK_TYPE_INT, GTK_TYPE_INT, GTK_TYPE_INT, GTK_TYPE_INT);
pixbuf_loader_signals[CLOSED] =
gtk_signal_new ("closed",
GTK_RUN_LAST,
parent_class->type,
GTK_SIGNAL_OFFSET (GdkPixbufLoaderClass, closed),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (parent_class, pixbuf_loader_signals, LAST_SIGNAL);
parent_class->destroy = gdk_pixbuf_loader_destroy;
parent_class->finalize = gdk_pixbuf_loader_finalize;
}
@ -96,20 +156,37 @@ gdk_pixbuf_loader_destroy (GtkObject *loader)
GdkPixbufLoaderPrivate *priv = NULL;
priv = GDK_PIXBUF_LOADER (loader)->private;
gdk_pixbuf_unref (priv->pixbuf);
/* We want to close it if it's not already closed */
if (priv->closed)
gdk_pixbuf_loader_close (GDK_PIXBUF_LOADER (loader));
if (priv->pixbuf)
gdk_pixbuf_unref (priv->pixbuf);
}
static void
gdk_pixbuf_loader_finalize (GtkObject *loader)
{
GdkPixbufLoader *load;
GdkPixbufLoaderPrivate *priv = NULL;
load = GTK_CHECK_CAST (loader, GDK_TYPE_PIXBUF_LOADER, GdkPixbufLoader);
priv = GDK_PIXBUF_LOADER (loader)->private;
g_free (priv);
}
static void
gdk_pixbuf_loader_prepare (GdkPixbuf *pixbuf, gpointer loader)
{
GdkPixbufLoaderPrivate *priv = NULL;
priv = GDK_PIXBUF_LOADER (loader)->private;
gdk_pixbuf_ref (pixbuf);
g_assert (priv->pixbuf == NULL);
priv->pixbuf = pixbuf;
gtk_signal_emit (GTK_OBJECT (loader), druid_page_signals[AREA_PREPARED]);
}
/* Public functions */
GtkObject *
gdk_pixbuf_loader_new (void)
@ -150,23 +227,46 @@ gdk_pixbuf_loader_write (GdkPixbufLoader *loader, gchar *buf, gint count)
g_return_val_if_fail (priv->closed == FALSE, FALSE);
if (priv->image_module == NULL) {
gboolean retval = TRUE;
g_print ("buf_offset:%d:\n", priv->buf_offset);
memcpy (priv->buf + priv->buf_offset,
buf,
(priv->buf_offset + count) > 128 ? 128 - priv->buf_offset : count);
if ((priv->buf_offset + count) >= 128) {
/* We have enough data to start doing something with the image */
priv->image_module = gdk_pixbuf_get_module (priv->buf, 128);
if (priv->image_module == NULL) {
g_print ("no module loaded. bummer\n");
return FALSE;
} else if ((priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL)) {
g_warning ("module %s does not support incremental loading.\n", priv->image_module->module_name);
return FALSE;
} else {
g_print ("module loaded: name is %s\n", priv->image_module->module_name);
priv->context = (priv->image_module->begin_load) (gdk_pixbuf_loader_prepare, loader);
retval = (priv->image_module->load_increment) (priv->context, priv->buf, 128);
/* if we had more then 128 bytes total, we want to send the rest of the buffer */
if (retval && (priv->buf_offset + count) >= 128) {
retval = (priv->image_module->load_increment) (priv->context,
buf,
count + priv->buf_offset - 128);
}
}
} else {
priv->buf_offset += count;
}
return retval;
}
return TRUE;
if (priv->image_module->load_increment)
return (priv->image_module->load_increment) (priv->context,
buf,
count);
return (FALSE);
}
/**
@ -213,6 +313,26 @@ gdk_pixbuf_loader_close (GdkPixbufLoader *loader)
/* we expect it's not closed */
g_return_if_fail (priv->closed == FALSE);
/* We have less the 128 bytes in the image. Flush it, and keep going. */
if (priv->module == NULL) {
priv->image_module = gdk_pixbuf_get_module (priv->buf, priv->buf_offset);
if (priv->image_module &&
((priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL))) {
g_warning ("module %s does not support incremental loading.\n", priv->image_module->module_name);
} else if (priv->image_module) {
g_print ("module loaded: name is %s\n", priv->image_module->module_name);
priv->context = (priv->image_module->begin_load) (gdk_pixbuf_loader_prepare, loader);
(priv->image_module->load_increment) (priv->context, priv->buf, priv->buf_offset);
}
}
if (priv->image_module && priv->image_module->stop_load)
(priv->image_module->stop_load) (loader->context);
priv->closed = TRUE;
}

2
gdk-pixbuf/gdk-pixbuf-loader.h
View File

@ -60,6 +60,8 @@ struct _GdkPixbufLoaderClass {
void (* area_updated) (GdkPixbufLoader *loader,
int x, int y, int width, int height);
void (* closed) (GdkPixbufLoader *loader);
};

130
gtk/gdk-pixbuf-loader.c
View File

@ -26,6 +26,12 @@
#include "gdk-pixbuf-loader.h"
#include "gdk-pixbuf-io.h"
enum {
AREA_UPDATED,
AREA_PREPARED,
CLOSED,
LAST_SIGNAL
};
static GtkObjectClass *parent_class;
@ -34,6 +40,7 @@ static void gdk_pixbuf_loader_init (GdkPixbufLoader *loader);
static void gdk_pixbuf_loader_destroy (GtkObject *loader);
static void gdk_pixbuf_loader_finalize (GtkObject *loader);
/* Internal data */
typedef struct _GdkPixbufLoaderPrivate GdkPixbufLoaderPrivate;
struct _GdkPixbufLoaderPrivate
@ -43,7 +50,34 @@ struct _GdkPixbufLoaderPrivate
gchar buf[128];
gint buf_offset;
ModuleType *image_module;
gpointer context;
};
static guint pixbuf_loader_signals[LAST_SIGNAL] = { 0 };
/* our marshaller */
typedef void (*GtkSignal_NONE__INT_INT_INT_INT) (GtkObject * object,
gint arg1,
gpointer arg2,
gint arg3,
gint arg4,
gint arg5,
gpointer user_data);
void
gtk_marshal_NONE__INT_INT_INT_INT (GtkObject * object,
GtkSignalFunc func,
gpointer func_data,
GtkArg * args)
{
GtkSignal_NONE__INT_INT_INT_INT rfunc;
rfunc = (GtkSignal_NONE__INT_INT_INT_INT) func;
(*rfunc) (object,
GTK_VALUE_INT (args[0]),
GTK_VALUE_INT (args[1]),
GTK_VALUE_INT (args[2]),
GTK_VALUE_INT (args[3]),
func_data);
}
GtkType
gdk_pixbuf_loader_get_type (void)
@ -73,6 +107,32 @@ gdk_pixbuf_loader_class_init (GdkPixbufLoaderClass *klass)
{
parent_class = GTK_OBJECT_CLASS (klass);
pixbuf_loader_signals[AREA_PREPARED] =
gtk_signal_new ("area_prepared",
GTK_RUN_LAST,
parent_class->type,
GTK_SIGNAL_OFFSET (GdkPixbufLoaderClass, area_prepared),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
pixbuf_loader_signals[AREA_UPDATED] =
gtk_signal_new ("area_updated",
GTK_RUN_LAST,
parent_class->type,
GTK_SIGNAL_OFFSET (GdkPixbufLoaderClass, area_updated),
gtk_marshal_NONE__INT_INT_INT_INT,
GTK_TYPE_NONE, 4, GTK_TYPE_INT, GTK_TYPE_INT, GTK_TYPE_INT, GTK_TYPE_INT);
pixbuf_loader_signals[CLOSED] =
gtk_signal_new ("closed",
GTK_RUN_LAST,
parent_class->type,
GTK_SIGNAL_OFFSET (GdkPixbufLoaderClass, closed),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (parent_class, pixbuf_loader_signals, LAST_SIGNAL);
parent_class->destroy = gdk_pixbuf_loader_destroy;
parent_class->finalize = gdk_pixbuf_loader_finalize;
}
@ -96,20 +156,37 @@ gdk_pixbuf_loader_destroy (GtkObject *loader)
GdkPixbufLoaderPrivate *priv = NULL;
priv = GDK_PIXBUF_LOADER (loader)->private;
gdk_pixbuf_unref (priv->pixbuf);
/* We want to close it if it's not already closed */
if (priv->closed)
gdk_pixbuf_loader_close (GDK_PIXBUF_LOADER (loader));
if (priv->pixbuf)
gdk_pixbuf_unref (priv->pixbuf);
}
static void
gdk_pixbuf_loader_finalize (GtkObject *loader)
{
GdkPixbufLoader *load;
GdkPixbufLoaderPrivate *priv = NULL;
load = GTK_CHECK_CAST (loader, GDK_TYPE_PIXBUF_LOADER, GdkPixbufLoader);
priv = GDK_PIXBUF_LOADER (loader)->private;
g_free (priv);
}
static void
gdk_pixbuf_loader_prepare (GdkPixbuf *pixbuf, gpointer loader)
{
GdkPixbufLoaderPrivate *priv = NULL;
priv = GDK_PIXBUF_LOADER (loader)->private;
gdk_pixbuf_ref (pixbuf);
g_assert (priv->pixbuf == NULL);
priv->pixbuf = pixbuf;
gtk_signal_emit (GTK_OBJECT (loader), druid_page_signals[AREA_PREPARED]);
}
/* Public functions */
GtkObject *
gdk_pixbuf_loader_new (void)
@ -150,23 +227,46 @@ gdk_pixbuf_loader_write (GdkPixbufLoader *loader, gchar *buf, gint count)
g_return_val_if_fail (priv->closed == FALSE, FALSE);
if (priv->image_module == NULL) {
gboolean retval = TRUE;
g_print ("buf_offset:%d:\n", priv->buf_offset);
memcpy (priv->buf + priv->buf_offset,
buf,
(priv->buf_offset + count) > 128 ? 128 - priv->buf_offset : count);
if ((priv->buf_offset + count) >= 128) {
/* We have enough data to start doing something with the image */
priv->image_module = gdk_pixbuf_get_module (priv->buf, 128);
if (priv->image_module == NULL) {
g_print ("no module loaded. bummer\n");
return FALSE;
} else if ((priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL)) {
g_warning ("module %s does not support incremental loading.\n", priv->image_module->module_name);
return FALSE;
} else {
g_print ("module loaded: name is %s\n", priv->image_module->module_name);
priv->context = (priv->image_module->begin_load) (gdk_pixbuf_loader_prepare, loader);
retval = (priv->image_module->load_increment) (priv->context, priv->buf, 128);
/* if we had more then 128 bytes total, we want to send the rest of the buffer */
if (retval && (priv->buf_offset + count) >= 128) {
retval = (priv->image_module->load_increment) (priv->context,
buf,
count + priv->buf_offset - 128);
}
}
} else {
priv->buf_offset += count;
}
return retval;
}
return TRUE;
if (priv->image_module->load_increment)
return (priv->image_module->load_increment) (priv->context,
buf,
count);
return (FALSE);
}
/**
@ -213,6 +313,26 @@ gdk_pixbuf_loader_close (GdkPixbufLoader *loader)
/* we expect it's not closed */
g_return_if_fail (priv->closed == FALSE);
/* We have less the 128 bytes in the image. Flush it, and keep going. */
if (priv->module == NULL) {
priv->image_module = gdk_pixbuf_get_module (priv->buf, priv->buf_offset);
if (priv->image_module &&
((priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL) ||
(priv->image_module->begin_load == NULL))) {
g_warning ("module %s does not support incremental loading.\n", priv->image_module->module_name);
} else if (priv->image_module) {
g_print ("module loaded: name is %s\n", priv->image_module->module_name);
priv->context = (priv->image_module->begin_load) (gdk_pixbuf_loader_prepare, loader);
(priv->image_module->load_increment) (priv->context, priv->buf, priv->buf_offset);
}
}
if (priv->image_module && priv->image_module->stop_load)
(priv->image_module->stop_load) (loader->context);
priv->closed = TRUE;
}

2
gtk/gdk-pixbuf-loader.h
View File

@ -60,6 +60,8 @@ struct _GdkPixbufLoaderClass {
void (* area_updated) (GdkPixbufLoader *loader,
int x, int y, int width, int height);
void (* closed) (GdkPixbufLoader *loader);
};