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transmission/gtk/tr_cell_renderer_torrent.c

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/* trcellrenderertorrent.c
* Copyright (C) 2002 Naba Kumar <kh_naba@users.sourceforge.net>
* heavily modified by Jörgen Scheibengruber <mfcn@gmx.de>
* heavily modified by Marco Pesenti Gritti <marco@gnome.org>
* heavily modified by Josh Elsasser <josh@elsasser.org> for transmission
*
* 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.
*/
/*
* Modified by the GTK+ Team and others 1997-2004. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <gtk/gtk.h>
#include "tr_cell_renderer_torrent.h"
#include "util.h"
enum { PROP_0, PROP_VALUE, PROP_TEXT, PROP_LABEL };
struct _TrCellRendererTorrentPrivate {
gfloat value;
gchar *text;
PangoAttrList *text_attrs;
gchar *label;
PangoAttrList *label_attrs;
GtkStyle *style;
};
static void
finalize(GObject *object);
static void
get_property(GObject *obj, guint id, GValue *value, GParamSpec *spec);
static void
set_property(GObject *obj, guint id, const GValue *value, GParamSpec *spec);
static void
get_size(GtkCellRenderer *cell, GtkWidget *widget, GdkRectangle *area,
gint *xoff, gint *yoff, gint *width, gint *height);
static void
render(GtkCellRenderer *cell, GdkWindow *window, GtkWidget *widget,
GdkRectangle *bg, GdkRectangle *area, GdkRectangle *exp, guint flags);
G_DEFINE_TYPE(TrCellRendererTorrent, tr_cell_renderer_torrent, GTK_TYPE_CELL_RENDERER);
static void
tr_cell_renderer_torrent_class_init (TrCellRendererTorrentClass *klass) {
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (klass);
object_class->finalize = finalize;
object_class->get_property = get_property;
object_class->set_property = set_property;
cell_class->get_size = get_size;
cell_class->render = render;
g_object_class_install_property(
object_class, PROP_VALUE,
g_param_spec_float("value", "Value", "Value of the torrent bar",
0.0, 1.0, 0.0, G_PARAM_READWRITE));
g_object_class_install_property(
object_class, PROP_TEXT,
g_param_spec_string ("text", "Text", "Text under the torrent bar",
/* XXX should I have NULL or "" here, and is initial strdup needed? */
NULL, G_PARAM_READWRITE));
g_object_class_install_property(
object_class, PROP_LABEL,
g_param_spec_string ("label", "Label", "Text on the torrent bar",
NULL, G_PARAM_READWRITE));
g_type_class_add_private (object_class,
sizeof (TrCellRendererTorrentPrivate));
}
static void
tr_cell_renderer_torrent_init(TrCellRendererTorrent *tcell) {
tcell->priv = G_TYPE_INSTANCE_GET_PRIVATE(
tcell, GTK_TYPE_CELL_RENDERER_TORRENT, TrCellRendererTorrentPrivate);
tcell->priv->value = 0.0;
tcell->priv->text = g_strdup("");
tcell->priv->text_attrs = NULL;
tcell->priv->label = g_strdup("");
tcell->priv->label_attrs = NULL;
tcell->priv->style = NULL;
}
GtkCellRenderer*
tr_cell_renderer_torrent_new(void) {
return g_object_new (GTK_TYPE_CELL_RENDERER_TORRENT, NULL);
}
/* XXX need to do this better somehow */
void
tr_cell_renderer_torrent_reset_style(TrCellRendererTorrent *tor) {
if(NULL != tor->priv->style) {
gtk_style_detach(tor->priv->style);
gtk_style_unref(tor->priv->style);
tor->priv->style = NULL;
}
}
static void
finalize(GObject *object) {
TrCellRendererTorrent *tcell = TR_CELL_RENDERER_TORRENT(object);
g_free(tcell->priv->text);
g_free(tcell->priv->label);
if(NULL != tcell->priv->text_attrs)
pango_attr_list_unref(tcell->priv->text_attrs);
if(NULL != tcell->priv->label_attrs)
pango_attr_list_unref(tcell->priv->label_attrs);
if(NULL != tcell->priv->style) {
gtk_style_detach(tcell->priv->style);
gtk_style_unref(tcell->priv->style);
}
G_OBJECT_CLASS (tr_cell_renderer_torrent_parent_class)->finalize(object);
}
static void
get_property(GObject *object, guint id, GValue *value, GParamSpec *pspec) {
TrCellRendererTorrent *tcell = TR_CELL_RENDERER_TORRENT (object);
switch (id) {
case PROP_VALUE:
g_value_set_float (value, tcell->priv->value);
break;
case PROP_TEXT:
g_value_set_string (value, tcell->priv->text);
break;
case PROP_LABEL:
g_value_set_string (value, tcell->priv->label);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, id, pspec);
}
}
static void
set_property(GObject *obj, guint id, const GValue *value, GParamSpec *spec) {
TrCellRendererTorrent *tcell = TR_CELL_RENDERER_TORRENT(obj);
gchar **prop = NULL;
PangoAttrList **attrs = NULL;
/*GError *err = NULL;*/
const gchar *markup;
switch(id) {
case PROP_VALUE:
tcell->priv->value = g_value_get_float(value);
break;
case PROP_TEXT:
prop = &tcell->priv->text;
attrs = &tcell->priv->text_attrs;
/* fallthrough */
case PROP_LABEL:
if(PROP_LABEL == id) {
prop = &tcell->priv->label;
attrs = &tcell->priv->label_attrs;
}
if(NULL == (markup = g_value_get_string(value)))
markup = "";
g_free(*prop);
if(NULL != *attrs)
pango_attr_list_unref(*attrs);
*prop = g_strdup(markup);
/*
if(pango_parse_markup(markup, -1, 0, attrs, prop, NULL, &err))
break;
g_warning ("Failed to parse markup: %s", err->message);
g_error_free(err);
*/
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, id, spec);
}
}
static void
get_size(GtkCellRenderer *cell, GtkWidget *widget, GdkRectangle *area,
gint *xoff, gint *yoff, gint *width, gint *height) {
TrCellRendererTorrent *tcell = TR_CELL_RENDERER_TORRENT(cell);
/* XXX do I have to unref the context? */
PangoLayout *layout = pango_layout_new(gtk_widget_get_pango_context(widget));
PangoRectangle rect;
gint h = cell->ypad * 2;
gint w1, w2;
pango_layout_set_markup(layout, tcell->priv->label, -1);
pango_layout_get_pixel_extents(layout, NULL, &rect);
w1 = rect.width;
h += rect.height;
pango_layout_set_markup(layout, tcell->priv->text, -1);
pango_layout_get_pixel_extents(layout, NULL, &rect);
w2 = rect.width;
h += rect.height;
if(NULL != xoff)
*xoff = 0;
if(NULL != yoff)
*yoff = (area->height - h) / 2;
if(NULL != width)
*width = MAX(w1, w2) + cell->xpad * 2;
if(NULL != height)
*height = h;
g_object_unref(layout);
}
#define RECTARGS(rect) (rect).x, (rect).y, (rect).width, (rect).height
static void
render(GtkCellRenderer *cell, GdkWindow *window, GtkWidget *widget,
GdkRectangle *bg SHUTUP, GdkRectangle *area, GdkRectangle *exp SHUTUP,
guint flags) {
TrCellRendererTorrent *tcell = TR_CELL_RENDERER_TORRENT(cell);
PangoContext *ctx = gtk_widget_get_pango_context(widget);
PangoLayout *llayout, *tlayout;
PangoRectangle lrect, trect;
GdkRectangle bar, complete, text;
gboolean rtl;
GtkStyle *style;
GtkCellRendererState textstate;
/* try to use the style for GtkProgressBar */
if(NULL == tcell->priv->style)
if(NULL != (tcell->priv->style = gtk_rc_get_style_by_paths(
gtk_widget_get_settings(widget), NULL, NULL,
gtk_progress_bar_get_type())))
tcell->priv->style = gtk_style_attach(gtk_style_ref(tcell->priv->style),
window);
style = (NULL == tcell->priv->style ? widget->style : tcell->priv->style);
rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
/* get the text layouts */
llayout = pango_layout_new(ctx);
/* XXX cache parsed markup? */
pango_layout_set_markup(llayout, tcell->priv->label, -1);
pango_layout_get_pixel_extents(llayout, NULL, &lrect);
tlayout = pango_layout_new(ctx);
pango_layout_set_markup(tlayout, tcell->priv->text, -1);
pango_layout_get_pixel_extents (tlayout, NULL, &trect);
/* set up the dimensions for the bar */
bar.x = area->x + cell->xpad;
bar.y = area->y + cell->ypad +
(area->height - lrect.height - trect.height) / 2;
bar.width = area->width - cell->xpad * 2;
bar.height = lrect.height;
/* set up the dimensions for the complete portion of the bar */
complete.x = bar.x + style->xthickness;
complete.y = bar.y + style->ythickness;
complete.width = (bar.width - style->xthickness * 2) * tcell->priv->value;
complete.height = bar.height - style->ythickness * 2;
if(rtl)
complete.x += bar.width - (complete.width + style->xthickness * 2);
/* set up the dimensions for the text under the bar */
text.x = bar.x;
text.y = bar.y + bar.height;
text.width = bar.width;
text.height = area->height - bar.height;
if(rtl && text.width > trect.width)
text.x += text.width - trect.width;
/* determine the state to render the text as */
if(GTK_CELL_RENDERER_INSENSITIVE & flags || !cell->sensitive)
textstate = GTK_STATE_INSENSITIVE;
else if(GTK_CELL_RENDERER_SELECTED & flags)
textstate = (GTK_WIDGET_HAS_FOCUS(widget) ?
GTK_STATE_SELECTED : GTK_STATE_ACTIVE);
else if(GTK_CELL_RENDERER_PRELIT & flags &&
GTK_STATE_PRELIGHT == GTK_WIDGET_STATE(widget))
textstate = GTK_STATE_PRELIGHT;
else if(GTK_STATE_INSENSITIVE == GTK_WIDGET_STATE(widget))
textstate = GTK_STATE_INSENSITIVE;
else
textstate = GTK_STATE_NORMAL;
/* draw the background of the bar */
if(complete.width < bar.width)
gtk_paint_box(style, window, GTK_STATE_NORMAL, GTK_SHADOW_IN,
NULL, widget, "trough", RECTARGS(bar));
/* draw the complete portion of the bar */
if(0 < complete.width)
gtk_paint_box(style, window, GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar", RECTARGS(complete));
/* draw the text under the bar */
gtk_paint_layout(widget->style, window, textstate, TRUE, &text,
widget, "cellrenderertext", text.x, text.y, tlayout);
/* free memory */
g_object_unref(llayout);
g_object_unref(tlayout);
}
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