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transmission/gtk/tr_cell_renderer_progress.c

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/******************************************************************************
* $Id$
*
* Copyright (c) 2006 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include "tr_cell_renderer_progress.h"
#include "transmission.h"
#include "util.h"
enum {
P_TEXT = 1,
P_MARKUP,
P_SPACER,
P_PROG,
};
static void
class_init(gpointer gclass, gpointer gdata);
static void
init(GTypeInstance *instance, gpointer gclass);
static void
set_property(GObject *obj, guint id, const GValue *val, GParamSpec *pspec);
static void
get_property(GObject *obj, guint id, GValue *val, GParamSpec *pspec);
static void
dispose(GObject *obj);
static void
finalize(GObject *obj);
static void
get_size(GtkCellRenderer *rend, GtkWidget *widget, GdkRectangle *cell,
gint *xoff, gint *yoff, gint *width, gint *height);
static void
render(GtkCellRenderer *rend, GdkWindow *win, GtkWidget *widget,
GdkRectangle *bg, GdkRectangle *cell, GdkRectangle *expose,
GtkCellRendererState flags);
static GtkStyle *
getstyle(TrCellRendererProgress *self, GtkWidget *wid, GdkWindow *win);
GType
tr_cell_renderer_progress_get_type(void) {
static GType type = 0;
if(0 == type) {
static const GTypeInfo info = {
sizeof (TrCellRendererProgressClass),
NULL, /* base_init */
NULL, /* base_finalize */
class_init, /* class_init */
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (TrCellRendererProgress),
0, /* n_preallocs */
init, /* instance_init */
NULL,
};
type = g_type_register_static(GTK_TYPE_CELL_RENDERER,
"TrCellRendererProgressType", &info, 0);
}
return type;
}
static void
class_init(gpointer gclass, gpointer gdata SHUTUP) {
GObjectClass *gobjclass = G_OBJECT_CLASS(gclass);
GtkCellRendererClass *rendclass = GTK_CELL_RENDERER_CLASS(gclass);
GParamSpec *pspec;
gobjclass->set_property = set_property;
gobjclass->get_property = get_property;
gobjclass->dispose = dispose;
gobjclass->finalize = finalize;
rendclass->get_size = get_size;
rendclass->render = render;
pspec = g_param_spec_string("markup", "Markup", "Marked up text to render",
NULL, G_PARAM_READWRITE);
g_object_class_install_property(gobjclass, P_MARKUP, pspec);
pspec = g_param_spec_string("bar-sizing", "Bar sizing",
"Text to determine size of progress bar",
NULL, G_PARAM_READWRITE);
g_object_class_install_property(gobjclass, P_SPACER, pspec);
pspec = g_param_spec_float("progress", "Progress", "Progress",
0.0, 1.0, 0.0, G_PARAM_READWRITE);
g_object_class_install_property(gobjclass, P_PROG, pspec);
}
static void
init(GTypeInstance *instance, gpointer gclass SHUTUP) {
TrCellRendererProgress *self = (TrCellRendererProgress *)instance;
self->rend = gtk_cell_renderer_text_new();
self->style = NULL;
self->text = NULL;
self->spacer = NULL;
self->barwidth = -1;
self->barheight = -1;
self->progress = 0.0;
self->disposed = FALSE;
g_object_ref(self->rend);
gtk_object_sink(GTK_OBJECT(self->rend));
}
static void
set_property(GObject *obj, guint id, const GValue *val,
GParamSpec *pspec) {
TrCellRendererProgress *self = (TrCellRendererProgress*)obj;
if(self->disposed)
return;
switch(id) {
case P_MARKUP:
g_free(self->text);
self->text = g_value_dup_string(val);
g_object_set_property(G_OBJECT(self->rend), "markup", val);
break;
case P_SPACER:
g_free(self->spacer);
self->spacer = g_value_dup_string(val);
self->barwidth = -1;
self->barheight = -1;
break;
case P_PROG:
self->progress = g_value_get_float(val);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, id, pspec);
break;
}
}
static void
get_property(GObject *obj, guint id, GValue *val,
GParamSpec *pspec) {
TrCellRendererProgress *self = (TrCellRendererProgress*)obj;
if(self->disposed)
return;
switch(id) {
case P_MARKUP:
g_value_set_string(val, self->text);
break;
case P_SPACER:
g_value_set_string(val, self->spacer);
break;
case P_PROG:
g_value_set_float(val, self->progress);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, id, pspec);
break;
}
}
static void
dispose(GObject *obj) {
GObjectClass *parent =
g_type_class_peek(g_type_parent(TR_CELL_RENDERER_PROGRESS_TYPE));
TrCellRendererProgress *self = (TrCellRendererProgress*)obj;
if(self->disposed)
return;
self->disposed = TRUE;
g_object_unref(self->rend);
tr_cell_renderer_progress_reset_style(self);
/* Chain up to the parent class */
parent->dispose(obj);
}
static void
finalize(GObject *obj) {
GObjectClass *parent =
g_type_class_peek(g_type_parent(TR_CELL_RENDERER_PROGRESS_TYPE));
TrCellRendererProgress *self = (TrCellRendererProgress*)obj;
g_free(self->text);
g_free(self->spacer);
/* Chain up to the parent class */
parent->finalize(obj);
}
GtkCellRenderer *
tr_cell_renderer_progress_new(void) {
return g_object_new(TR_CELL_RENDERER_PROGRESS_TYPE, NULL);
}
static void
get_size(GtkCellRenderer *rend, GtkWidget *wid, GdkRectangle *cell,
gint *xoff, gint *yoff, gint *width, gint *height) {
TrCellRendererProgress *self;
GdkRectangle rect;
int xpad, ypad;
TR_IS_CELL_RENDERER_PROGRESS(rend);
self = TR_CELL_RENDERER_PROGRESS(rend);
/* calculate and cache minimum bar width and height */
if(0 > self->barwidth || 0 > self->barheight) {
xpad = self->rend->xpad;
ypad = self->rend->ypad;
g_object_set(self->rend, "markup", self->spacer, "xpad", 0, "ypad", 0,
NULL);
gtk_cell_renderer_get_size(self->rend, wid, NULL, NULL, NULL,
&self->barwidth, &self->barheight);
g_object_set(self->rend, "markup", self->text, "xpad", xpad, "ypad", ypad,
NULL);
}
/* get the text size */
if(NULL != cell) {
rect = *cell;
rect.height -= self->barheight;
cell = &rect;
}
gtk_cell_renderer_get_size(self->rend, wid, cell, xoff, yoff, width, height);
if(NULL != width && self->barwidth > *width)
*width = self->barwidth;
if(NULL != height)
*height += self->barheight + (NULL == yoff ? 0 : *yoff);
}
static void
render(GtkCellRenderer *rend, GdkWindow *win, GtkWidget *wid, GdkRectangle *bg,
GdkRectangle *cell, GdkRectangle *expose, GtkCellRendererState flags) {
TrCellRendererProgress *self;
GdkRectangle rect, full, empty;
GtkStyle *style;
TR_IS_CELL_RENDERER_PROGRESS(rend);
self = TR_CELL_RENDERER_PROGRESS(rend);
style = getstyle(self, wid, win);
/* make sure we have a cached bar width */
if(0 > self->barwidth || 0 > self->barheight)
get_size(rend, wid, NULL, NULL, NULL, NULL, NULL);
g_assert(0 < self->barwidth && 0 < self->barheight);
/* set up the dimensions for the bar and text */
rect = *cell;
rect.x += rend->xpad + style->xthickness;
rect.y += rend->ypad + style->ythickness;
rect.width -= (rend->xpad + style->xthickness) * 2;
rect.height -= (rend->ypad + style->ythickness) * 2;
empty = rect;
empty.height = self->barheight;
full = empty;
full.x += style->xthickness;
full.y += style->ythickness;
full.width -= style->xthickness * 2;
full.height -= style->ythickness * 2;
rect.y += self->barheight;
rect.height -= self->barheight;
/* draw the bar background */
gtk_paint_box(style, win, GTK_STATE_NORMAL, GTK_SHADOW_IN, NULL, wid,
"trough", empty.x, empty.y, empty.width, empty.height);
/* figure the width of the complete portion of the bar */
if(PANGO_DIRECTION_RTL ==
pango_context_get_base_dir(gtk_widget_get_pango_context(wid)))
full.x += full.width - (full.width * self->progress);
full.width *= self->progress;
/* draw the complete portion of the bar */
if(0 < full.width)
gtk_paint_box(style, win, GTK_STATE_PRELIGHT, GTK_SHADOW_OUT, NULL,
wid, "bar", full.x, full.y, full.width, full.height);
/* draw the text */
if(0 < rect.height)
gtk_cell_renderer_render(self->rend, win, wid, bg, &rect, expose, flags);
}
/* ugly hack to get the style for GtkProgressBar */
static GtkStyle *
getstyle(TrCellRendererProgress *self, GtkWidget *wid, GdkWindow *win) {
if(NULL == self->style) {
self->style = gtk_rc_get_style_by_paths(gtk_widget_get_settings(wid), NULL,
NULL, GTK_TYPE_PROGRESS_BAR);
if(NULL != self->style)
self->style = gtk_style_attach(gtk_style_ref(self->style), win);
}
return (NULL == self->style ? wid->style : self->style);
}
/* hack to make the GtkProgressBar style hack work when the theme changes */
void
tr_cell_renderer_progress_reset_style(TrCellRendererProgress *self) {
TR_IS_CELL_RENDERER_PROGRESS(self);
if(NULL != self->style) {
gtk_style_detach(self->style);
gtk_style_unref(self->style);
self->style = NULL;
}
}
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