rofi/source/widgets/icon.c

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/*
* rofi
*
* MIT/X11 License
* Copyright © 2013-2018 Qball Cow <qball@gmpclient.org>
*
* 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.
*
*/
/** The log domain of this widget. */
#define G_LOG_DOMAIN "Widgets.Icon"
#include <config.h>
#include <stdio.h>
#include "widgets/widget.h"
#include "widgets/widget-internal.h"
#include "widgets/icon.h"
#include "theme.h"
#include "rofi-icon-fetcher.h"
struct _icon
{
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widget widget;
// Size of the icon.
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int size;
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uint32_t icon_fetch_id;
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double yalign,xalign;
// Source surface.
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cairo_surface_t *icon;
};
static int icon_get_desired_height ( widget *widget )
{
icon *b = (icon *) widget;
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int height = b->size;
height += widget_padding_get_padding_height ( widget );
return height;
}
static int icon_get_desired_width ( widget *widget )
{
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icon *b = (icon *) widget;
int width = b->size;
width += widget_padding_get_padding_width ( widget );
return width;
}
static void icon_draw ( widget *wid, cairo_t *draw )
{
icon *b = (icon *) wid;
// If no icon is loaded. quit.
if ( b->icon == NULL && b->icon_fetch_id > 0 ) {
b->icon = rofi_icon_fetcher_get ( b->icon_fetch_id );
if ( b->icon ) {
cairo_surface_reference ( b->icon );
}
}
if ( b->icon == NULL ) {
return;
}
int iconh = cairo_image_surface_get_height ( b->icon );
int iconw = cairo_image_surface_get_width ( b->icon );
int icons = MAX ( iconh, iconw );
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double scale = (double) b->size / icons;
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int lpad = widget_padding_get_left ( WIDGET ( b ) ) ;
int rpad = widget_padding_get_right ( WIDGET ( b ) ) ;
int tpad = widget_padding_get_top ( WIDGET ( b ) ) ;
int bpad = widget_padding_get_bottom ( WIDGET ( b ) ) ;
cairo_save ( draw );
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cairo_translate ( draw,
lpad + ( b->widget.w - iconw * scale - lpad -rpad )*b->xalign,
tpad + ( b->widget.h- iconh * scale -tpad - bpad )*b->yalign );
cairo_scale ( draw, scale, scale );
cairo_set_source_surface ( draw, b->icon, 0, 0 );
cairo_paint ( draw );
cairo_restore ( draw );
}
static void icon_free ( widget *wid )
{
icon *b = (icon *) wid;
if ( b->icon ) {
cairo_surface_destroy ( b->icon );
}
g_free ( b );
}
static void icon_resize ( widget *widget, short w, short h )
{
icon *b = (icon *) widget;
if ( b->widget.w != w || b->widget.h != h ) {
b->widget.w = w;
b->widget.h = h;
widget_update ( widget );
}
}
void icon_set_surface ( icon *icon, cairo_surface_t *surf )
{
icon->icon_fetch_id = 0;
if ( icon->icon ) {
cairo_surface_destroy ( icon->icon );
icon->icon = NULL;
}
if ( surf ) {
cairo_surface_reference ( surf );
icon->icon = surf;
}
widget_queue_redraw ( WIDGET ( icon ) );
}
icon * icon_create ( widget *parent, const char *name )
{
icon *b = g_malloc0 ( sizeof ( icon ) );
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b->size = 16;
// Initialize widget.
widget_init ( WIDGET ( b ), parent, WIDGET_TYPE_UNKNOWN, name );
b->widget.draw = icon_draw;
b->widget.free = icon_free;
b->widget.resize = icon_resize;
b->widget.get_desired_height = icon_get_desired_height;
b->widget.get_desired_width = icon_get_desired_width;
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RofiDistance d = rofi_theme_get_distance ( WIDGET (b), "size" , b->size );
b->size = distance_get_pixel ( d, ROFI_ORIENTATION_VERTICAL );
const char * filename = rofi_theme_get_string ( WIDGET ( b ), "filename", NULL );
if ( filename ) {
b->icon_fetch_id = rofi_icon_fetcher_query ( filename, b->size );
}
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b->yalign = rofi_theme_get_double ( WIDGET ( b ), "vertical-align", 0.5 );
b->yalign = MAX ( 0, MIN ( 1.0, b->yalign ) );
b->xalign = rofi_theme_get_double ( WIDGET ( b ), "horizontal-align", 0.5 );
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b->xalign = MAX ( 0, MIN ( 1.0, b->xalign ) );
return b;
}