gstreamer/editor/gsteditorpad.c

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#include <gnome.h>
#include <gst/gst.h>
#include "gsteditor.h"
/* class functions */
static void gst_editor_pad_class_init(GstEditorPadClass *klass);
static void gst_editor_pad_init(GstEditorPad *pad);
static void gst_editor_pad_set_arg(GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_pad_get_arg(GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_pad_realize(GstEditorPad *pad);
/* class implementation functions */
static void gst_editor_pad_update(GnomeCanvasItem *item,double *affine,
ArtSVP *clip_path,int flags);
static gint gst_editor_pad_event(GnomeCanvasItem *item,GdkEvent *event);
/* events fired by items within self */
static gint gst_editor_pad_padbox_event(GnomeCanvasItem *item,
GdkEvent *event,
GstEditorPad *pad);
/* utility functions */
static void gst_editor_pad_resize(GstEditorPad *pad);
enum {
ARG_0,
ARG_X,
ARG_Y,
ARG_WIDTH,
ARG_HEIGHT,
ARG_PAD,
};
enum {
LAST_SIGNAL
};
static GtkObjectClass *parent_class;
static guint gst_editor_pad_signals[LAST_SIGNAL] = { 0 };
GtkType gst_editor_pad_get_type() {
static GtkType pad_type = 0;
if (!pad_type) {
static const GtkTypeInfo pad_info = {
"GstEditorPad",
sizeof(GstEditorPad),
sizeof(GstEditorPadClass),
(GtkClassInitFunc)gst_editor_pad_class_init,
(GtkObjectInitFunc)gst_editor_pad_init,
NULL,
NULL,
(GtkClassInitFunc)NULL,
};
pad_type = gtk_type_unique(gtk_object_get_type(),&pad_info);
}
return pad_type;
}
static void gst_editor_pad_class_init(GstEditorPadClass *klass) {
GtkObjectClass *object_class;
object_class = (GtkObjectClass*)klass;
parent_class = gtk_type_class(gtk_object_get_type());
gtk_object_add_arg_type("GstEditorPad::x",GTK_TYPE_DOUBLE,
GTK_ARG_READWRITE,ARG_X);
gtk_object_add_arg_type("GstEditorPad::y",GTK_TYPE_DOUBLE,
GTK_ARG_READWRITE,ARG_Y);
gtk_object_add_arg_type("GstEditorPad::width",GTK_TYPE_DOUBLE,
GTK_ARG_READWRITE,ARG_WIDTH);
gtk_object_add_arg_type("GstEditorPad::height",GTK_TYPE_DOUBLE,
GTK_ARG_READWRITE,ARG_HEIGHT);
gtk_object_add_arg_type("GstEditorPad::pad",GTK_TYPE_POINTER,
GTK_ARG_READWRITE,ARG_PAD);
klass->realize = gst_editor_pad_realize;
object_class->set_arg = gst_editor_pad_set_arg;
object_class->get_arg = gst_editor_pad_get_arg;
}
static void gst_editor_pad_init(GstEditorPad *pad) {
}
GstEditorPad *gst_editor_pad_new(GstEditorElement *parent,GstPad *pad,
const gchar *first_arg_name, ...) {
GstEditorPad *editorpad;
va_list args;
g_return_if_fail(parent != NULL);
g_return_if_fail(GST_IS_EDITOR_ELEMENT(parent));
g_return_if_fail(pad != NULL);
g_return_if_fail(GST_IS_PAD(pad));
editorpad = GST_EDITOR_PAD(gtk_type_new(GST_TYPE_EDITOR_PAD));
editorpad->pad = pad;
va_start(args,first_arg_name);
gst_editor_pad_construct(editorpad,parent,first_arg_name,args);
va_end(args);
return editorpad;
}
void gst_editor_pad_construct(GstEditorPad *pad,
GstEditorElement *parent,
const gchar *first_arg_name,va_list args) {
GtkObject *obj = GTK_OBJECT(pad);
GSList *arg_list = NULL, *info_list = NULL;
gchar *error;
GstEditorPadClass *padclass;
// g_print("in gst_editor_pad_construct()\n");
error = gtk_object_args_collect(GTK_OBJECT_TYPE(obj),&arg_list,
&info_list,first_arg_name,args);
if (error) {
g_warning("gst_editor_pad_construct(): %s",error);
g_free(error);
} else {
GSList *arg,*info;
// g_print("setting all the arguments on the pad\n");
for (arg=arg_list,info=info_list;arg;arg=arg->next,info=info->next)
gtk_object_arg_set(obj,arg->data,info->data);
gtk_args_collect_cleanup(arg_list,info_list);
}
pad->parent = parent;
padclass = GST_EDITOR_PAD_CLASS(GTK_OBJECT(pad)->klass);
if (padclass)
(padclass->realize)(pad);
}
static void gst_editor_pad_set_arg(GtkObject *object,GtkArg *arg,guint id) {
GstEditorPad *pad;
/* get the major types of this object */
pad = GST_EDITOR_PAD(object);
switch (id) {
case ARG_X:
pad->x = GTK_VALUE_DOUBLE(*arg);
break;
case ARG_Y:
pad->y = GTK_VALUE_DOUBLE(*arg);
break;
case ARG_WIDTH:
pad->width = GTK_VALUE_DOUBLE(*arg);
pad->resize = TRUE;
break;
case ARG_HEIGHT:
pad->height = GTK_VALUE_DOUBLE(*arg);
pad->resize = TRUE;
break;
case ARG_PAD:
/* FIXME: this is very brute force */
pad->pad = GTK_VALUE_POINTER(*arg);
break;
default:
g_warning("gsteditorpad: unknown arg!");
break;
}
}
static void gst_editor_pad_get_arg(GtkObject *object,GtkArg *arg,guint id) {
GstEditorPad *pad;
/* get the major types of this object */
pad = GST_EDITOR_PAD(object);
switch (id) {
case ARG_X:
GTK_VALUE_INT(*arg) = pad->x;
break;
case ARG_Y:
GTK_VALUE_INT(*arg) = pad->y;
break;
case ARG_WIDTH:
GTK_VALUE_INT(*arg) = pad->width;
break;
case ARG_HEIGHT:
GTK_VALUE_INT(*arg) = pad->height;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
static void gst_editor_pad_realize(GstEditorPad *pad) {
gint i;
// g_print("realizing editor pad %p\n",pad);
/* we must be attached to an element */
g_return_if_fail(pad->parent != NULL);
/* create the group and bounding box */
pad->group = GNOME_CANVAS_GROUP(gnome_canvas_item_new(pad->parent->group,
gnome_canvas_group_get_type(),"x",pad->x,"y",pad->y,NULL));
g_return_if_fail(pad->group != NULL);
GST_EDITOR_SET_OBJECT(pad->group,pad);
pad->border = gnome_canvas_item_new(pad->group,
gnome_canvas_rect_get_type(),
"width_units",1.0,"fill_color","white","outline_color","black",
"x1",0.0,"y1",0.0,"x2",pad->width,"y2",pad->height,NULL);
g_return_if_fail(pad->border != NULL);
GST_EDITOR_SET_OBJECT(pad->border,pad);
/* create the pad box on the correct side */
pad->issrc = (pad->pad->direction == GST_PAD_SRC);
if (pad->issrc)
pad->padbox = gnome_canvas_item_new(pad->group,
gnome_canvas_rect_get_type(),
"width_units",1.0,"fill_color","white","outline_color","black",
"x1",pad->x-4.0,"y1",2.0,"x2",pad->x,"y2",pad->height-2.0,NULL);
else
pad->padbox = gnome_canvas_item_new(pad->group,
gnome_canvas_rect_get_type(),
"width_units",1.0,"fill_color","white","outline_color","black",
"x1",0.0,"y1",2.0,"x2",4.0,"y2",pad->height-2.0,NULL);
g_return_if_fail(pad->padbox != NULL);
GST_EDITOR_SET_OBJECT(pad->padbox,pad);
gtk_signal_connect(GTK_OBJECT(pad->padbox),"event",
GTK_SIGNAL_FUNC(gst_editor_pad_padbox_event),pad);
pad->title = gnome_canvas_item_new(pad->group,
gnome_canvas_text_get_type(),
"text",gst_pad_get_name(pad->pad),
"x",0.0,"y",0.0,"anchor",GTK_ANCHOR_NORTH_WEST,
"font_gdk",gtk_widget_get_default_style()->font,
NULL);
g_return_if_fail(pad->title != NULL);
GST_EDITOR_SET_OBJECT(pad->title,pad);
pad->realized = TRUE;
pad->resize = TRUE;
gst_editor_pad_repack(pad);
}
static void gst_editor_pad_resize(GstEditorPad *pad) {
gdouble minwidth,minheight;
// g_print("resizing pad\n");
minwidth = 0;minheight = 0;
/* get the text size and add it into minsize */
minwidth = gst_util_get_double_arg(GTK_OBJECT(pad->title),
"text_width") + 2.0;
minheight = gst_util_get_double_arg(GTK_OBJECT(pad->title),
"text_height");
/* calculate the size of the padbox */
pad->boxheight = minheight - 4.0;
pad->boxwidth = pad->boxheight / 2.0;
minwidth += pad->boxwidth;
/* force the thing to grow if necessary */
pad->width = MAX(pad->width,minwidth);
pad->height = MAX(pad->height,minheight);
/* update the connection if there is one */
// g_print("connection is %p\n",pad->connection);
if (pad->connection != NULL)
gst_editor_connection_resize(pad->connection);
}
void gst_editor_pad_repack(GstEditorPad *pad) {
gdouble x1,y1,x2,y2;
if (!pad->realized) return;
gst_editor_pad_resize(pad);
x1 = 0;y1 = 0;
x2 = x1 + pad->width;y2 = y1 + pad->height;
// g_print("repacking pad at %.2fx%.2f - %.2fx%.2f\n",x1,y1,x2,y2);
/* move the group */
gtk_object_set(GTK_OBJECT(pad->group),"x",pad->x,"y",pad->y,NULL);
/* start by resizing the bordering box */
gtk_object_set(GTK_OBJECT(pad->border),
"x1",x1,"y1",y1,"x2",x2,"y2",y2,NULL);
/* if we're a left-jusified sink */
if (pad->issrc) {
/* and move the pad box */
gtk_object_set(GTK_OBJECT(pad->padbox),
"x1",x2-pad->boxwidth,"y1",y1+2.0,
"x2",x2,"y2",y2-2.0,NULL);
/* then move the text to the right place */
gtk_object_set(GTK_OBJECT(pad->title),
"x",x2-pad->boxwidth-1.0,"y",y1,
"anchor",GTK_ANCHOR_NORTH_EAST,
NULL);
} else {
/* and move the pad box */
gtk_object_set(GTK_OBJECT(pad->padbox),
"x1",x1,"y1",y1+2.0,
"x2",x1+pad->boxwidth,"y2",y2-2.0,NULL);
/* then move the text to the right place */
gtk_object_set(GTK_OBJECT(pad->title),
"x",x1+pad->boxwidth+1.0,"y",y1,
"anchor",GTK_ANCHOR_NORTH_WEST,
NULL);
}
if (pad->connection != NULL) {
pad->connection->resize = TRUE;
gst_editor_connection_resize(pad->connection);
}
pad->resize = FALSE;
}
/*
static gint gst_editor_pad_event(GnomeCanvasItem *item,GdkEvent *event) {
GstEditorPad *pad = GST_EDITOR_PAD(item);
gdouble item_x,item_y;
GdkCursor *fleur;
gdouble tx,ty;
item_x = event->button.x;
item_y = event->button.y;
gnome_canvas_item_w2i(item->parent,&item_x,&item_y);
switch(event->type) {
case GDK_ENTER_NOTIFY:
// g_print("entered pad\n");
break;
case GDK_LEAVE_NOTIFY:
// g_print("left pad\n");
break;
default:
break;
}
return FALSE;
}
*/
/* FIXME FIXME FIXME */
static gint gst_editor_pad_padbox_event(GnomeCanvasItem *item,
GdkEvent *event,
GstEditorPad *pad) {
GstEditorElement *element;
GstEditorBin *bin;
// g_print("padbox has event %d\n",event->type);
g_return_if_fail(GST_IS_EDITOR_PAD(pad));
element = pad->parent;
bin = element->parent;
switch(event->type) {
case GDK_ENTER_NOTIFY:
// g_print("entered pad '%s'\n",
// gst_pad_get_name(pad->pad));
break;
case GDK_LEAVE_NOTIFY:
// g_print("left pad '%s'\n",
// gst_pad_get_name(pad->pad));
break;
case GDK_BUTTON_PRESS:
// g_print("have button press in pad '%s'\n",
// gst_pad_get_name(pad->pad));
gst_editor_bin_start_banding(bin,pad);
return TRUE;
break;
case GDK_MOTION_NOTIFY:
// g_print("have motion in pad\n");
break;
default:
break;
}
return FALSE;
}