Revision 74f2632206090a0dfd2cc7ddb91a875f22a9347b authored by houz on 19 December 2015, 21:41:39 UTC, committed by houz on 19 December 2015, 21:41:39 UTC
Possible fix for the import dialog crash.
button.c
/*
This file is part of darktable,
copyright (c)2010 Henrik Andersson.
darktable is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
darktable 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with darktable. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "button.h"
#include "gui/gtk.h"
#include "bauhaus/bauhaus.h"
static void _button_class_init(GtkDarktableButtonClass *klass);
static void _button_init(GtkDarktableButton *button);
static gboolean _button_draw(GtkWidget *widget, cairo_t *cr);
static void _button_class_init(GtkDarktableButtonClass *klass)
{
GtkWidgetClass *widget_class = (GtkWidgetClass *)klass;
widget_class->draw = _button_draw;
}
static void _button_init(GtkDarktableButton *button)
{
}
static gboolean _button_draw(GtkWidget *widget, cairo_t *cr)
{
g_return_val_if_fail(widget != NULL, FALSE);
g_return_val_if_fail(DTGTK_IS_BUTTON(widget), FALSE);
GtkStateFlags state = gtk_widget_get_state_flags(widget);
GdkRGBA fg_color;
GtkStyleContext *context = gtk_widget_get_style_context(widget);
gtk_style_context_get_color(context, state, &fg_color);
/* update paint flags depending of states */
int flags = DTGTK_BUTTON(widget)->icon_flags;
/* set inner border */
int border = DT_PIXEL_APPLY_DPI((flags & CPF_DO_NOT_USE_BORDER) ? 2 : 6);
/* prelight */
if(state & GTK_STATE_FLAG_PRELIGHT)
flags |= CPF_PRELIGHT;
else
flags &= ~CPF_PRELIGHT;
/* create pango text settings if label exists */
PangoLayout *layout = NULL;
int pw = 0, ph = 0;
const gchar *text = gtk_button_get_label(GTK_BUTTON(widget));
if(text)
{
layout = gtk_widget_create_pango_layout(widget, NULL);
pango_layout_set_font_description(layout, darktable.bauhaus->pango_font_desc);
pango_cairo_context_set_resolution(pango_layout_get_context(layout), darktable.gui->dpi);
pango_layout_set_text(layout, text, -1);
pango_layout_get_pixel_size(layout, &pw, &ph);
}
/* begin cairo drawing */
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
int width = allocation.width;
int height = allocation.height;
/* draw standard button background if not transparent */
if((flags & CPF_STYLE_FLAT))
{
if(flags & CPF_PRELIGHT)
{
gtk_render_background(context, cr, 0, 0, width, height);
}
}
else if(!(flags & CPF_BG_TRANSPARENT))
{
/* draw default boxed button */
gtk_render_background(context, cr, 0, 0, width, height);
if(!(flags & CPF_DO_NOT_USE_BORDER))
gtk_render_frame(context, cr, 0, 0, width, height);
}
gdk_cairo_set_source_rgba(cr, &fg_color);
/* draw icon */
if(DTGTK_BUTTON(widget)->icon)
{
int icon_width = text ? height - (border * 2) : width - (border * 2);
int icon_height = height - (border * 2);
if(icon_width > 0 && icon_height > 0)
{
if(text)
DTGTK_BUTTON(widget)
->icon(cr, border, border, height - (border * 2), height - (border * 2), flags);
else
DTGTK_BUTTON(widget)
->icon(cr, border, border, width - (border * 2), height - (border * 2), flags);
}
}
/* draw label */
if(text)
{
int lx = DT_PIXEL_APPLY_DPI(2), ly = ((height / 2.0) - (ph / 2.0));
if(DTGTK_BUTTON(widget)->icon) lx += width;
cairo_move_to(cr, lx, ly);
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
pango_cairo_show_layout(cr, layout);
g_object_unref(layout);
}
return FALSE;
}
// Public functions
GtkWidget *dtgtk_button_new(DTGTKCairoPaintIconFunc paint, gint paintflags)
{
GtkDarktableButton *button;
button = g_object_new(dtgtk_button_get_type(), NULL);
button->icon = paint;
button->icon_flags = paintflags;
gtk_widget_set_size_request(GTK_WIDGET(button), DT_PIXEL_APPLY_DPI(17), DT_PIXEL_APPLY_DPI(17));
return (GtkWidget *)button;
}
GType dtgtk_button_get_type()
{
static GType dtgtk_button_type = 0;
if(!dtgtk_button_type)
{
static const GTypeInfo dtgtk_button_info = {
sizeof(GtkDarktableButtonClass), (GBaseInitFunc)NULL, (GBaseFinalizeFunc)NULL,
(GClassInitFunc)_button_class_init, NULL, /* class_finalize */
NULL, /* class_data */
sizeof(GtkDarktableButton), 0, /* n_preallocs */
(GInstanceInitFunc)_button_init,
};
dtgtk_button_type = g_type_register_static(GTK_TYPE_BUTTON, "GtkDarktableButton", &dtgtk_button_info, 0);
}
return dtgtk_button_type;
}
void dtgtk_button_set_paint(GtkDarktableButton *button, DTGTKCairoPaintIconFunc paint, gint paintflags)
{
button->icon = paint;
button->icon_flags = paintflags;
}
void dtgtk_button_override_color(GtkDarktableButton *button, GdkRGBA *color)
{
if(color)
{
button->fg = *color;
button->icon_flags |= CPF_CUSTOM_FG;
}
else
button->icon_flags &= ~CPF_CUSTOM_FG;
}
void dtgtk_button_override_background_color(GtkDarktableButton *button, GdkRGBA *color)
{
if(color)
{
button->bg = *color;
button->icon_flags |= CPF_CUSTOM_BG;
}
else
button->icon_flags &= ~CPF_CUSTOM_BG;
}
// modelines: These editor modelines have been set for all relevant files by tools/update_modelines.sh
// vim: shiftwidth=2 expandtab tabstop=2 cindent
// kate: tab-indents: off; indent-width 2; replace-tabs on; indent-mode cstyle; remove-trailing-space on;
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