mirror of https://github.com/davatorium/rofi.git
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/**
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* MIT/X11 License
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* Modified (c) 2015-2016 Qball Cow <qball@gmpclient.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <config.h>
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#include <xkbcommon/xkbcommon.h>
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#include <glib.h>
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#include "scrollbar.h"
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#include "x11-helper.h"
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#include "settings.h"
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scrollbar *scrollbar_create ( short x, short y, short w, short h )
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{
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scrollbar *sb = g_malloc0 ( sizeof ( scrollbar ) );
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sb->widget.x = x;
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sb->widget.y = y;
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sb->widget.w = MAX ( 1, w );
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sb->widget.h = MAX ( 1, h );
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sb->length = 10;
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sb->pos = 0;
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sb->pos_length = 4;
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// Create GC.
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return sb;
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}
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void scrollbar_free ( scrollbar *sb )
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{
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if ( sb != NULL ) {
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g_free ( sb );
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}
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}
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void scrollbar_set_max_value ( scrollbar *sb, unsigned int max )
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{
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if ( sb != NULL ) {
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sb->length = MAX ( 1u, max );
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}
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}
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void scrollbar_set_handle ( scrollbar *sb, unsigned int pos )
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{
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if ( sb != NULL ) {
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sb->pos = MIN ( sb->length, pos );
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}
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}
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void scrollbar_set_handle_length ( scrollbar *sb, unsigned int pos_length )
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{
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if ( sb != NULL ) {
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sb->pos_length = MIN ( sb->length, MAX ( 1u, pos_length ) );
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}
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}
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void scrollbar_draw ( scrollbar *sb, cairo_t *draw )
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{
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if ( sb != NULL ) {
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// Calculate position and size.
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const short bh = sb->widget.h - 0;
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float sec = ( ( bh ) / (float) sb->length );
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short height = sb->pos_length * sec;
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short y = sb->pos * sec;
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// Set max pos.
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y = MIN ( y, bh - 2 );
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// Never go out of bar.
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height = MAX ( 2, height );
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// Cap length;
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height = MIN ( bh - y + 1, ( height ) );
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// Redraw base window
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color_separator ( draw );
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cairo_rectangle ( draw, sb->widget.x + config.line_margin, sb->widget.y + y, sb->widget.w - config.line_margin, height );
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cairo_fill ( draw );
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}
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}
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void scrollbar_resize ( scrollbar *sb, int w, int h )
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{
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if ( sb != NULL ) {
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if ( h > 0 ) {
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sb->widget.h = h;
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}
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if ( w > 0 ) {
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sb->widget.w = w;
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}
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}
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}
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unsigned int scrollbar_clicked ( scrollbar *sb, int y )
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{
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if ( sb != NULL ) {
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if ( y >= sb->widget.y && y < ( sb->widget.y + sb->widget.h ) ) {
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y -= sb->widget.y;
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y = MIN ( MAX ( 1, y ), sb->widget.h - 1 ) - 1;
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const short bh = sb->widget.h - 2;
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float sec = ( ( bh ) / (float) sb->length );
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unsigned int sel = y / sec;
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return MIN ( sel, sb->length - 1 );
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}
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}
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return 0;
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}
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