mirror of
https://github.com/lbonn/rofi
synced 2024-12-27 12:43:10 +00:00
8a2e67f6fe
* workaround for #303 Subpixel rendering may be disabled by some clip paths or when text itself is clipped. * optimize draw_pango_layout()
975 lines
30 KiB
C
975 lines
30 KiB
C
/*
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* rofi
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*
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* MIT/X11 License
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* Copyright © 2012 Sean Pringle <sean.pringle@gmail.com>
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* Copyright © 2013-2020 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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*/
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#include <config.h>
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#include <xcb/xcb.h>
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#include <ctype.h>
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#include <string.h>
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#include <glib.h>
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#include <math.h>
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#include "widgets/textbox.h"
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#include "keyb.h"
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#include "helper.h"
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#include "helper-theme.h"
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#include "mode.h"
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#include "view.h"
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#include "theme.h"
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/** The space reserved for the DOT when enabling multi-select. */
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#define DOT_OFFSET 15
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static void textbox_draw ( widget *, cairo_t * );
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static void textbox_free ( widget * );
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static int textbox_get_width ( widget * );
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static int _textbox_get_height ( widget * );
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static void __textbox_update_pango_text ( textbox *tb );
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/** Default pango context */
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static PangoContext *p_context = NULL;
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/** The pango font metrics */
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static PangoFontMetrics *p_metrics = NULL;
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/** Cache to hold font descriptions. This it to avoid having to lookup each time. */
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typedef struct TBFontConfig
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{
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/** Font description */
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PangoFontDescription *pfd;
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/** Font metrics */
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PangoFontMetrics *metrics;
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/** height */
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double height;
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}TBFontConfig;
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/** HashMap of previously parsed font descriptions. */
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static GHashTable *tbfc_cache = NULL;
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static gboolean textbox_blink ( gpointer data )
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{
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textbox *tb = (textbox *) data;
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if ( tb->blink < 2 ) {
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tb->blink = !tb->blink;
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widget_queue_redraw ( WIDGET ( tb ) );
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rofi_view_queue_redraw ( );
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}
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else {
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tb->blink--;
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}
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return TRUE;
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}
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static void textbox_resize ( widget *wid, short w, short h )
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{
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textbox *tb = (textbox *) wid;
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textbox_moveresize ( tb, tb->widget.x, tb->widget.y, w, h );
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}
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static int textbox_get_desired_height ( widget *wid )
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{
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textbox *tb = (textbox *) wid;
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if ( ( tb->flags & TB_AUTOHEIGHT ) == 0 ) {
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return tb->widget.h;
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}
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if ( tb->changed ) {
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__textbox_update_pango_text ( tb );
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}
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int height = textbox_get_estimated_height ( tb, pango_layout_get_line_count ( tb->layout ) );
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return height;
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}
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static WidgetTriggerActionResult textbox_editable_trigger_action ( widget *wid, MouseBindingMouseDefaultAction action, gint x, gint y, G_GNUC_UNUSED void *user_data )
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{
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textbox *tb = (textbox *) wid;
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switch ( action )
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{
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case MOUSE_CLICK_DOWN:
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{
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gint i;
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// subtract padding on left.
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x -= widget_padding_get_left ( wid );
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gint max = textbox_get_font_width ( tb );
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// Right of text, move to end.
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if ( x >= max ) {
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textbox_cursor_end ( tb );
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}
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else if ( x > 0 ) {
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// If in range, get index.
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pango_layout_xy_to_index ( tb->layout, x * PANGO_SCALE, y * PANGO_SCALE, &i, NULL );
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textbox_cursor ( tb, i );
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}
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return WIDGET_TRIGGER_ACTION_RESULT_HANDLED;
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}
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case MOUSE_CLICK_UP:
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case MOUSE_DCLICK_DOWN:
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case MOUSE_DCLICK_UP:
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break;
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}
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return WIDGET_TRIGGER_ACTION_RESULT_IGNORED;
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}
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static void textbox_initialize_font ( textbox *tb )
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{
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tb->metrics = p_metrics;
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const char * font = rofi_theme_get_string ( WIDGET ( tb ), "font", NULL );
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if ( font ) {
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TBFontConfig *tbfc = g_hash_table_lookup ( tbfc_cache, font );
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if ( tbfc == NULL ) {
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tbfc = g_malloc0 ( sizeof ( TBFontConfig ) );
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tbfc->pfd = pango_font_description_from_string ( font );
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if ( helper_validate_font ( tbfc->pfd, font ) ) {
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tbfc->metrics = pango_context_get_metrics ( p_context, tbfc->pfd, NULL );
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tbfc->height = pango_font_metrics_get_ascent ( tbfc->metrics ) + pango_font_metrics_get_descent ( tbfc->metrics );
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// Cast away consts. (*yuck*) because table_insert does not know it is const.
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g_hash_table_insert ( tbfc_cache, (char *) font, tbfc );
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}
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else {
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pango_font_description_free ( tbfc->pfd );
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g_free ( tbfc );
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tbfc = NULL;
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}
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}
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if ( tbfc ) {
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// Update for used font.
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pango_layout_set_font_description ( tb->layout, tbfc->pfd );
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tb->metrics = tbfc->metrics;
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}
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}
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}
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textbox* textbox_create ( widget *parent, WidgetType type, const char *name, TextboxFlags flags, TextBoxFontType tbft, const char *text, double xalign, double yalign )
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{
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textbox *tb = g_slice_new0 ( textbox );
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widget_init ( WIDGET ( tb ), parent, type, name );
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tb->widget.draw = textbox_draw;
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tb->widget.free = textbox_free;
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tb->widget.resize = textbox_resize;
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tb->widget.get_width = textbox_get_width;
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tb->widget.get_height = _textbox_get_height;
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tb->widget.get_desired_height = textbox_get_desired_height;
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tb->widget.get_desired_width = textbox_get_desired_width;
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tb->flags = flags;
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tb->emode = PANGO_ELLIPSIZE_END;
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tb->changed = FALSE;
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tb->layout = pango_layout_new ( p_context );
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textbox_font ( tb, tbft );
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textbox_initialize_font ( tb );
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if ( ( flags & TB_WRAP ) == TB_WRAP ) {
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pango_layout_set_wrap ( tb->layout, PANGO_WRAP_WORD_CHAR );
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}
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const char *txt = rofi_theme_get_string ( WIDGET ( tb ), "str", text );
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if ( txt == NULL || ( *txt ) == '\0' ) {
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txt = rofi_theme_get_string ( WIDGET ( tb ), "content", text );
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}
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const char *placeholder = rofi_theme_get_string ( WIDGET ( tb ), "placeholder", NULL );
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if ( placeholder ) {
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tb->placeholder = placeholder;
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}
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textbox_text ( tb, txt ? txt : "" );
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textbox_cursor_end ( tb );
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// auto height/width modes get handled here
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textbox_moveresize ( tb, tb->widget.x, tb->widget.y, tb->widget.w, tb->widget.h );
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tb->blink_timeout = 0;
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tb->blink = 1;
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if ( ( flags & TB_EDITABLE ) == TB_EDITABLE ) {
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if ( rofi_theme_get_boolean ( WIDGET ( tb ), "blink", TRUE ) ) {
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tb->blink_timeout = g_timeout_add ( 1200, textbox_blink, tb );
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}
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tb->widget.trigger_action = textbox_editable_trigger_action;
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}
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tb->yalign = rofi_theme_get_double ( WIDGET ( tb ), "vertical-align", yalign );
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tb->yalign = MAX ( 0, MIN ( 1.0, tb->yalign ) );
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tb->xalign = rofi_theme_get_double ( WIDGET ( tb ), "horizontal-align", xalign );
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tb->xalign = MAX ( 0, MIN ( 1.0, tb->xalign ) );
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return tb;
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}
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/**
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* State names used for theming.
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*/
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const char *const theme_prop_names[][3] = {
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/** Normal row */
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{ "normal.normal", "selected.normal", "alternate.normal" },
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/** Urgent row */
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{ "normal.urgent", "selected.urgent", "alternate.urgent" },
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/** Active row */
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{ "normal.active", "selected.active", "alternate.active" },
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};
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void textbox_font ( textbox *tb, TextBoxFontType tbft )
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{
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TextBoxFontType t = tbft & STATE_MASK;
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if ( tb == NULL ) {
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return;
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}
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// ACTIVE has priority over URGENT if both set.
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if ( t == ( URGENT | ACTIVE ) ) {
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t = ACTIVE;
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}
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switch ( ( tbft & FMOD_MASK ) )
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{
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case HIGHLIGHT:
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widget_set_state ( WIDGET ( tb ), theme_prop_names[t][1] );
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break;
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case ALT:
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widget_set_state ( WIDGET ( tb ), theme_prop_names[t][2] );
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break;
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default:
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widget_set_state ( WIDGET ( tb ), theme_prop_names[t][0] );
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break;
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}
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if ( tb->tbft != tbft || tb->widget.state == NULL ) {
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widget_queue_redraw ( WIDGET ( tb ) );
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}
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tb->tbft = tbft;
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}
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/**
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* @param tb The textbox object.
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*
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* Update the pango layout's text. It does this depending on the
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* textbox flags.
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*/
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static void __textbox_update_pango_text ( textbox *tb )
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{
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pango_layout_set_attributes ( tb->layout, NULL );
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if ( tb->placeholder && ( tb->text == NULL || tb->text[0] == 0 ) ) {
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tb->show_placeholder = TRUE;
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pango_layout_set_text ( tb->layout, tb->placeholder, -1 );
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return;
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}
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tb->show_placeholder = FALSE;
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if ( ( tb->flags & TB_PASSWORD ) == TB_PASSWORD ) {
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size_t l = g_utf8_strlen ( tb->text, -1 );
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char string [l + 1];
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memset ( string, '*', l );
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string[l] = '\0';
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pango_layout_set_text ( tb->layout, string, l );
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}
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else if ( tb->flags & TB_MARKUP || tb->tbft & MARKUP ) {
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pango_layout_set_markup ( tb->layout, tb->text, -1 );
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}
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else {
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pango_layout_set_text ( tb->layout, tb->text, -1 );
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}
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}
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const char *textbox_get_visible_text ( const textbox *tb )
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{
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if ( tb == NULL ) {
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return NULL;
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}
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return pango_layout_get_text ( tb->layout );
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}
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PangoAttrList *textbox_get_pango_attributes ( textbox *tb )
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{
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if ( tb == NULL ) {
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return NULL;
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}
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return pango_layout_get_attributes ( tb->layout );
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}
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void textbox_set_pango_attributes ( textbox *tb, PangoAttrList *list )
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{
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if ( tb == NULL ) {
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return;
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}
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pango_layout_set_attributes ( tb->layout, list );
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}
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// set the default text to display
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void textbox_text ( textbox *tb, const char *text )
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{
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if ( tb == NULL ) {
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return;
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}
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g_free ( tb->text );
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const gchar *last_pointer = NULL;
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if ( g_utf8_validate ( text, -1, &last_pointer ) ) {
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tb->text = g_strdup ( text );
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}
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else {
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if ( last_pointer != NULL ) {
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// Copy string up to invalid character.
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tb->text = g_strndup ( text, ( last_pointer - text ) );
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}
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else {
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tb->text = g_strdup ( "Invalid UTF-8 string." );
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}
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}
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__textbox_update_pango_text ( tb );
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if ( tb->flags & TB_AUTOWIDTH ) {
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textbox_moveresize ( tb, tb->widget.x, tb->widget.y, tb->widget.w, tb->widget.h );
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if ( WIDGET ( tb )->parent ) {
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widget_update ( WIDGET ( tb )->parent );
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}
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}
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tb->cursor = MAX ( 0, MIN ( ( int ) g_utf8_strlen ( tb->text, -1 ), tb->cursor ) );
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widget_queue_redraw ( WIDGET ( tb ) );
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}
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// within the parent handled auto width/height modes
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void textbox_moveresize ( textbox *tb, int x, int y, int w, int h )
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{
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unsigned int offset = ( ( tb->flags & TB_INDICATOR ) ? DOT_OFFSET : 0 );
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if ( tb->flags & TB_AUTOWIDTH ) {
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pango_layout_set_width ( tb->layout, -1 );
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w = textbox_get_font_width ( tb ) + widget_padding_get_padding_width ( WIDGET ( tb ) ) + offset;
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}
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else {
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// set ellipsize
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if ( ( tb->flags & TB_EDITABLE ) == TB_EDITABLE ) {
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pango_layout_set_ellipsize ( tb->layout, PANGO_ELLIPSIZE_MIDDLE );
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}
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else if ( ( tb->flags & TB_WRAP ) != TB_WRAP ) {
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pango_layout_set_ellipsize ( tb->layout, tb->emode );
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}
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else {
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pango_layout_set_ellipsize ( tb->layout, PANGO_ELLIPSIZE_NONE );
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}
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}
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if ( tb->flags & TB_AUTOHEIGHT ) {
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// Width determines height!
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int tw = MAX ( 1, w );
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pango_layout_set_width ( tb->layout, PANGO_SCALE * ( tw - widget_padding_get_padding_width ( WIDGET ( tb ) ) - offset ) );
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int hd = textbox_get_height ( tb );
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h = MAX ( hd, h );
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}
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if ( x != tb->widget.x || y != tb->widget.y || w != tb->widget.w || h != tb->widget.h ) {
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tb->widget.x = x;
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tb->widget.y = y;
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tb->widget.h = MAX ( 1, h );
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tb->widget.w = MAX ( 1, w );
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}
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// We always want to update this
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pango_layout_set_width ( tb->layout, PANGO_SCALE * ( tb->widget.w - widget_padding_get_padding_width ( WIDGET ( tb ) ) - offset ) );
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widget_queue_redraw ( WIDGET ( tb ) );
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}
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// will also unmap the window if still displayed
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static void textbox_free ( widget *wid )
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{
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if ( wid == NULL ) {
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return;
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}
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textbox *tb = (textbox *) wid;
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if ( tb->blink_timeout > 0 ) {
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g_source_remove ( tb->blink_timeout );
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tb->blink_timeout = 0;
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}
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g_free ( tb->text );
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if ( tb->layout != NULL ) {
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g_object_unref ( tb->layout );
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}
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g_slice_free ( textbox, tb );
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}
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/* FIXME: workaround for cairo bug, when subpixel rendering failed with some cairo clip paths */
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static void draw_pango_layout (cairo_t * cr, PangoLayout * layout, int x, int y)
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{
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cairo_surface_t * txt_surf;
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cairo_t * txt_cr;
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txt_surf = cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, NULL);
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txt_cr = cairo_create (txt_surf);
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cairo_set_source (txt_cr, cairo_get_source (cr));
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pango_cairo_show_layout (txt_cr, layout);
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cairo_destroy (txt_cr);
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{
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cairo_pattern_t * pat = cairo_get_source (cr);
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cairo_pattern_reference (pat);
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cairo_set_source_surface (cr, txt_surf, x, y);
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cairo_paint (cr);
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cairo_set_source (cr, pat);
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}
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cairo_surface_destroy (txt_surf);
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}
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static void textbox_draw ( widget *wid, cairo_t *draw )
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{
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if ( wid == NULL ) {
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return;
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}
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textbox *tb = (textbox *) wid;
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unsigned int offset = ( ( tb->flags & TB_INDICATOR ) ? DOT_OFFSET : 0 );
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if ( tb->changed ) {
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__textbox_update_pango_text ( tb );
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}
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// Skip the side MARGIN on the X axis.
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int x = widget_padding_get_left ( WIDGET ( tb ) );
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int top = widget_padding_get_top ( WIDGET ( tb ) );
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int y = ( pango_font_metrics_get_ascent ( tb->metrics ) - pango_layout_get_baseline ( tb->layout ) ) / PANGO_SCALE;
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int line_width = 0, line_height = 0;
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// Get actual width.
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pango_layout_get_pixel_size ( tb->layout, &line_width, &line_height );
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if ( tb->yalign > 0.001 ) {
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int bottom = widget_padding_get_bottom ( WIDGET ( tb ) );
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top = ( tb->widget.h - bottom - line_height - top ) * tb->yalign + top;
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}
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y += top;
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x += offset;
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if ( tb->xalign > 0.001 ) {
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int rem = MAX ( 0, tb->widget.w - widget_padding_get_padding_width ( WIDGET ( tb ) ) - line_width );
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x = tb->xalign * rem + widget_padding_get_left ( WIDGET ( tb ) );
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}
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// TODO check if this is still needed after flatning.
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cairo_set_operator ( draw, CAIRO_OPERATOR_OVER );
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cairo_set_source_rgb ( draw, 0.0, 0.0, 0.0 );
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rofi_theme_get_color ( WIDGET ( tb ), "text-color", draw );
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if ( tb->show_placeholder ) {
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rofi_theme_get_color ( WIDGET ( tb ), "placeholder-color", draw );
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}
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// Set ARGB
|
|
// We need to set over, otherwise subpixel hinting wont work.
|
|
cairo_move_to ( draw, x, top );
|
|
draw_pango_layout (draw, tb->layout, x, top);
|
|
|
|
// draw the cursor
|
|
rofi_theme_get_color ( WIDGET ( tb ), "text-color", draw );
|
|
if ( tb->flags & TB_EDITABLE && tb->blink ) {
|
|
// We want to place the cursor based on the text shown.
|
|
const char *text = pango_layout_get_text ( tb->layout );
|
|
// Clamp the position, should not be needed, but we are paranoid.
|
|
int cursor_offset = MIN ( tb->cursor, g_utf8_strlen ( text, -1 ) );
|
|
PangoRectangle pos;
|
|
// convert to byte location.
|
|
char *offset = g_utf8_offset_to_pointer ( text, cursor_offset );
|
|
pango_layout_get_cursor_pos ( tb->layout, offset - text, &pos, NULL );
|
|
int cursor_x = pos.x / PANGO_SCALE;
|
|
int cursor_y = pos.y / PANGO_SCALE;
|
|
int cursor_height = pos.height / PANGO_SCALE;
|
|
int cursor_width = 2;
|
|
cairo_rectangle ( draw, x + cursor_x, y + cursor_y, cursor_width, cursor_height );
|
|
cairo_fill ( draw );
|
|
}
|
|
|
|
if ( ( tb->flags & TB_INDICATOR ) == TB_INDICATOR && ( tb->tbft & ( SELECTED ) ) ) {
|
|
cairo_arc ( draw, DOT_OFFSET / 2.0, tb->widget.h / 2.0, 2.0, 0, 2.0 * M_PI );
|
|
cairo_fill ( draw );
|
|
}
|
|
}
|
|
|
|
// cursor handling for edit mode
|
|
void textbox_cursor ( textbox *tb, int pos )
|
|
{
|
|
if ( tb == NULL ) {
|
|
return;
|
|
}
|
|
int length = ( tb->text == NULL ) ? 0 : g_utf8_strlen ( tb->text, -1 );
|
|
tb->cursor = MAX ( 0, MIN ( length, pos ) );
|
|
// Stop blink!
|
|
tb->blink = 3;
|
|
widget_queue_redraw ( WIDGET ( tb ) );
|
|
}
|
|
|
|
/**
|
|
* @param tb Handle to the textbox
|
|
*
|
|
* Move cursor one position forward.
|
|
*
|
|
* @returns if cursor was moved.
|
|
*/
|
|
static int textbox_cursor_inc ( textbox *tb )
|
|
{
|
|
int old = tb->cursor;
|
|
textbox_cursor ( tb, tb->cursor + 1 );
|
|
return old != tb->cursor;
|
|
}
|
|
|
|
/**
|
|
* @param tb Handle to the textbox
|
|
*
|
|
* Move cursor one position backward.
|
|
*
|
|
* @returns if cursor was moved.
|
|
*/
|
|
static int textbox_cursor_dec ( textbox *tb )
|
|
{
|
|
int old = tb->cursor;
|
|
textbox_cursor ( tb, tb->cursor - 1 );
|
|
return old != tb->cursor;
|
|
}
|
|
|
|
// Move word right
|
|
static void textbox_cursor_inc_word ( textbox *tb )
|
|
{
|
|
if ( tb->text == NULL ) {
|
|
return;
|
|
}
|
|
// Find word boundaries, with pango_Break?
|
|
gchar *c = g_utf8_offset_to_pointer ( tb->text, tb->cursor );
|
|
while ( ( c = g_utf8_next_char ( c ) ) ) {
|
|
gunichar uc = g_utf8_get_char ( c );
|
|
GUnicodeBreakType bt = g_unichar_break_type ( uc );
|
|
if ( ( bt == G_UNICODE_BREAK_ALPHABETIC || bt == G_UNICODE_BREAK_HEBREW_LETTER ||
|
|
bt == G_UNICODE_BREAK_NUMERIC || bt == G_UNICODE_BREAK_QUOTATION ) ) {
|
|
break;
|
|
}
|
|
}
|
|
if ( c == NULL || *c == '\0' ) {
|
|
return;
|
|
}
|
|
while ( ( c = g_utf8_next_char ( c ) ) ) {
|
|
gunichar uc = g_utf8_get_char ( c );
|
|
GUnicodeBreakType bt = g_unichar_break_type ( uc );
|
|
if ( !( bt == G_UNICODE_BREAK_ALPHABETIC || bt == G_UNICODE_BREAK_HEBREW_LETTER ||
|
|
bt == G_UNICODE_BREAK_NUMERIC || bt == G_UNICODE_BREAK_QUOTATION ) ) {
|
|
break;
|
|
}
|
|
}
|
|
int index = g_utf8_pointer_to_offset ( tb->text, c );
|
|
textbox_cursor ( tb, index );
|
|
}
|
|
// move word left
|
|
static void textbox_cursor_dec_word ( textbox *tb )
|
|
{
|
|
// Find word boundaries, with pango_Break?
|
|
gchar *n;
|
|
gchar *c = g_utf8_offset_to_pointer ( tb->text, tb->cursor );
|
|
while ( ( c = g_utf8_prev_char ( c ) ) && c != tb->text ) {
|
|
gunichar uc = g_utf8_get_char ( c );
|
|
GUnicodeBreakType bt = g_unichar_break_type ( uc );
|
|
if ( ( bt == G_UNICODE_BREAK_ALPHABETIC || bt == G_UNICODE_BREAK_HEBREW_LETTER ||
|
|
bt == G_UNICODE_BREAK_NUMERIC || bt == G_UNICODE_BREAK_QUOTATION ) ) {
|
|
break;
|
|
}
|
|
}
|
|
if ( c != tb->text ) {
|
|
while ( ( n = g_utf8_prev_char ( c ) ) ) {
|
|
gunichar uc = g_utf8_get_char ( n );
|
|
GUnicodeBreakType bt = g_unichar_break_type ( uc );
|
|
if ( !( bt == G_UNICODE_BREAK_ALPHABETIC || bt == G_UNICODE_BREAK_HEBREW_LETTER ||
|
|
bt == G_UNICODE_BREAK_NUMERIC || bt == G_UNICODE_BREAK_QUOTATION ) ) {
|
|
break;
|
|
}
|
|
c = n;
|
|
if ( n == tb->text ) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
int index = g_utf8_pointer_to_offset ( tb->text, c );
|
|
textbox_cursor ( tb, index );
|
|
}
|
|
|
|
// end of line
|
|
void textbox_cursor_end ( textbox *tb )
|
|
{
|
|
if ( tb->text == NULL ) {
|
|
tb->cursor = 0;
|
|
widget_queue_redraw ( WIDGET ( tb ) );
|
|
return;
|
|
}
|
|
tb->cursor = ( int ) g_utf8_strlen ( tb->text, -1 );
|
|
widget_queue_redraw ( WIDGET ( tb ) );
|
|
// Stop blink!
|
|
tb->blink = 2;
|
|
}
|
|
|
|
// insert text
|
|
void textbox_insert ( textbox *tb, const int char_pos, const char *str, const int slen )
|
|
{
|
|
if ( tb == NULL ) {
|
|
return;
|
|
}
|
|
char *c = g_utf8_offset_to_pointer ( tb->text, char_pos );
|
|
int pos = c - tb->text;
|
|
int len = ( int ) strlen ( tb->text );
|
|
pos = MAX ( 0, MIN ( len, pos ) );
|
|
// expand buffer
|
|
tb->text = g_realloc ( tb->text, len + slen + 1 );
|
|
// move everything after cursor upward
|
|
char *at = tb->text + pos;
|
|
memmove ( at + slen, at, len - pos + 1 );
|
|
// insert new str
|
|
memmove ( at, str, slen );
|
|
|
|
// Set modified, lay out need te be redrawn
|
|
// Stop blink!
|
|
tb->blink = 2;
|
|
tb->changed = TRUE;
|
|
}
|
|
|
|
// remove text
|
|
void textbox_delete ( textbox *tb, int pos, int dlen )
|
|
{
|
|
if ( tb == NULL ) {
|
|
return;
|
|
}
|
|
int len = g_utf8_strlen ( tb->text, -1 );
|
|
if ( len == pos ) {
|
|
return;
|
|
}
|
|
pos = MAX ( 0, MIN ( len, pos ) );
|
|
if ( ( pos + dlen ) > len ) {
|
|
dlen = len - dlen;
|
|
}
|
|
// move everything after pos+dlen down
|
|
char *start = g_utf8_offset_to_pointer ( tb->text, pos );
|
|
char *end = g_utf8_offset_to_pointer ( tb->text, pos + dlen );
|
|
// Move remainder + closing \0
|
|
memmove ( start, end, ( tb->text + strlen ( tb->text ) ) - end + 1 );
|
|
if ( tb->cursor >= pos && tb->cursor < ( pos + dlen ) ) {
|
|
tb->cursor = pos;
|
|
}
|
|
else if ( tb->cursor >= ( pos + dlen ) ) {
|
|
tb->cursor -= dlen;
|
|
}
|
|
// Set modified, lay out need te be redrawn
|
|
// Stop blink!
|
|
tb->blink = 2;
|
|
tb->changed = TRUE;
|
|
}
|
|
|
|
/**
|
|
* @param tb Handle to the textbox
|
|
*
|
|
* Delete character after cursor.
|
|
*/
|
|
static void textbox_cursor_del ( textbox *tb )
|
|
{
|
|
if ( tb == NULL || tb->text == NULL ) {
|
|
return;
|
|
}
|
|
textbox_delete ( tb, tb->cursor, 1 );
|
|
}
|
|
|
|
/**
|
|
* @param tb Handle to the textbox
|
|
*
|
|
* Delete character before cursor.
|
|
*/
|
|
static void textbox_cursor_bkspc ( textbox *tb )
|
|
{
|
|
if ( tb && tb->cursor > 0 ) {
|
|
textbox_cursor_dec ( tb );
|
|
textbox_cursor_del ( tb );
|
|
}
|
|
}
|
|
static void textbox_cursor_bkspc_word ( textbox *tb )
|
|
{
|
|
if ( tb && tb->cursor > 0 ) {
|
|
int cursor = tb->cursor;
|
|
textbox_cursor_dec_word ( tb );
|
|
if ( cursor > tb->cursor ) {
|
|
textbox_delete ( tb, tb->cursor, cursor - tb->cursor );
|
|
}
|
|
}
|
|
}
|
|
static void textbox_cursor_del_eol ( textbox *tb )
|
|
{
|
|
if ( tb && tb->cursor >= 0 ) {
|
|
int length = g_utf8_strlen ( tb->text, -1 ) - tb->cursor;
|
|
if ( length >= 0 ) {
|
|
textbox_delete ( tb, tb->cursor, length );
|
|
}
|
|
}
|
|
}
|
|
static void textbox_cursor_del_sol ( textbox *tb )
|
|
{
|
|
if ( tb && tb->cursor >= 0 ) {
|
|
int length = tb->cursor;
|
|
if ( length >= 0 ) {
|
|
textbox_delete ( tb, 0, length );
|
|
}
|
|
}
|
|
}
|
|
static void textbox_cursor_del_word ( textbox *tb )
|
|
{
|
|
if ( tb && tb->cursor >= 0 ) {
|
|
int cursor = tb->cursor;
|
|
textbox_cursor_inc_word ( tb );
|
|
if ( cursor < tb->cursor ) {
|
|
textbox_delete ( tb, cursor, tb->cursor - cursor );
|
|
}
|
|
}
|
|
}
|
|
|
|
// handle a keypress in edit mode
|
|
// 2 = nav
|
|
// 0 = unhandled
|
|
// 1 = handled
|
|
// -1 = handled and return pressed (finished)
|
|
int textbox_keybinding ( textbox *tb, KeyBindingAction action )
|
|
{
|
|
if ( tb == NULL ) {
|
|
return 0;
|
|
}
|
|
if ( !( tb->flags & TB_EDITABLE ) ) {
|
|
return 0;
|
|
}
|
|
|
|
switch ( action )
|
|
{
|
|
// Left or Ctrl-b
|
|
case MOVE_CHAR_BACK:
|
|
return ( textbox_cursor_dec ( tb ) == TRUE ) ? 2 : 0;
|
|
// Right or Ctrl-F
|
|
case MOVE_CHAR_FORWARD:
|
|
return ( textbox_cursor_inc ( tb ) == TRUE ) ? 2 : 0;
|
|
// Ctrl-U: Kill from the beginning to the end of the line.
|
|
case CLEAR_LINE:
|
|
textbox_text ( tb, "" );
|
|
return 1;
|
|
// Ctrl-A
|
|
case MOVE_FRONT:
|
|
textbox_cursor ( tb, 0 );
|
|
return 2;
|
|
// Ctrl-E
|
|
case MOVE_END:
|
|
textbox_cursor_end ( tb );
|
|
return 2;
|
|
// Ctrl-Alt-h
|
|
case REMOVE_WORD_BACK:
|
|
textbox_cursor_bkspc_word ( tb );
|
|
return 1;
|
|
// Ctrl-Alt-d
|
|
case REMOVE_WORD_FORWARD:
|
|
textbox_cursor_del_word ( tb );
|
|
return 1;
|
|
case REMOVE_TO_EOL:
|
|
textbox_cursor_del_eol ( tb );
|
|
return 1;
|
|
case REMOVE_TO_SOL:
|
|
textbox_cursor_del_sol ( tb );
|
|
return 1;
|
|
// Delete or Ctrl-D
|
|
case REMOVE_CHAR_FORWARD:
|
|
textbox_cursor_del ( tb );
|
|
return 1;
|
|
// Alt-B, Ctrl-Left
|
|
case MOVE_WORD_BACK:
|
|
textbox_cursor_dec_word ( tb );
|
|
return 2;
|
|
// Alt-F, Ctrl-Right
|
|
case MOVE_WORD_FORWARD:
|
|
textbox_cursor_inc_word ( tb );
|
|
return 2;
|
|
// BackSpace, Shift-BackSpace, Ctrl-h
|
|
case REMOVE_CHAR_BACK:
|
|
textbox_cursor_bkspc ( tb );
|
|
return 1;
|
|
default:
|
|
g_return_val_if_reached ( 0 );
|
|
}
|
|
}
|
|
|
|
gboolean textbox_append_text ( textbox *tb, const char *pad, const int pad_len )
|
|
{
|
|
if ( tb == NULL ) {
|
|
return FALSE;
|
|
}
|
|
if ( !( tb->flags & TB_EDITABLE ) ) {
|
|
return FALSE;
|
|
}
|
|
|
|
// Filter When alt/ctrl is pressed do not accept the character.
|
|
|
|
gboolean used_something = FALSE;
|
|
const gchar *w, *n, *e;
|
|
for ( w = pad, n = g_utf8_next_char ( w ), e = w + pad_len; w < e; w = n, n = g_utf8_next_char ( n ) ) {
|
|
if ( g_unichar_iscntrl ( g_utf8_get_char ( w ) ) ) {
|
|
continue;
|
|
}
|
|
textbox_insert ( tb, tb->cursor, w, n - w );
|
|
textbox_cursor ( tb, tb->cursor + 1 );
|
|
used_something = TRUE;
|
|
}
|
|
return used_something;
|
|
}
|
|
|
|
static void tbfc_entry_free ( TBFontConfig *tbfc )
|
|
{
|
|
pango_font_metrics_unref ( tbfc->metrics );
|
|
if ( tbfc->pfd ) {
|
|
pango_font_description_free ( tbfc->pfd );
|
|
}
|
|
g_free ( tbfc );
|
|
}
|
|
void textbox_setup ( void )
|
|
{
|
|
tbfc_cache = g_hash_table_new_full ( g_str_hash, g_str_equal, NULL, (GDestroyNotify) tbfc_entry_free );
|
|
}
|
|
|
|
/** Name of the default font (if none is given) */
|
|
const char *default_font_name = "default";
|
|
void textbox_set_pango_context ( const char *font, PangoContext *p )
|
|
{
|
|
g_assert ( p_metrics == NULL );
|
|
p_context = g_object_ref ( p );
|
|
p_metrics = pango_context_get_metrics ( p_context, NULL, NULL );
|
|
TBFontConfig *tbfc = g_malloc0 ( sizeof ( TBFontConfig ) );
|
|
tbfc->metrics = p_metrics;
|
|
tbfc->height = pango_font_metrics_get_ascent ( tbfc->metrics ) + pango_font_metrics_get_descent ( tbfc->metrics );
|
|
g_hash_table_insert ( tbfc_cache, (gpointer *) ( font ? font : default_font_name ), tbfc );
|
|
}
|
|
|
|
void textbox_cleanup ( void )
|
|
{
|
|
g_hash_table_destroy ( tbfc_cache );
|
|
if ( p_context ) {
|
|
g_object_unref ( p_context );
|
|
p_context = NULL;
|
|
}
|
|
}
|
|
|
|
int textbox_get_width ( widget *wid )
|
|
{
|
|
textbox *tb = (textbox *) wid;
|
|
if ( tb->flags & TB_AUTOWIDTH ) {
|
|
unsigned int offset = ( tb->flags & TB_INDICATOR ) ? DOT_OFFSET : 0;
|
|
return textbox_get_font_width ( tb ) + widget_padding_get_padding_width ( wid ) + offset;
|
|
}
|
|
return tb->widget.w;
|
|
}
|
|
|
|
int _textbox_get_height ( widget *wid )
|
|
{
|
|
textbox *tb = (textbox *) wid;
|
|
if ( tb->flags & TB_AUTOHEIGHT ) {
|
|
return textbox_get_estimated_height ( tb, pango_layout_get_line_count ( tb->layout ) );
|
|
}
|
|
return tb->widget.h;
|
|
}
|
|
int textbox_get_height ( const textbox *tb )
|
|
{
|
|
return textbox_get_font_height ( tb ) + widget_padding_get_padding_height ( WIDGET ( tb ) );
|
|
}
|
|
|
|
int textbox_get_font_height ( const textbox *tb )
|
|
{
|
|
int height;
|
|
pango_layout_get_pixel_size ( tb->layout, NULL, &height );
|
|
return height;
|
|
}
|
|
|
|
int textbox_get_font_width ( const textbox *tb )
|
|
{
|
|
PangoRectangle rect;
|
|
pango_layout_get_pixel_extents ( tb->layout, NULL, &rect );
|
|
return rect.width + rect.x;
|
|
}
|
|
|
|
/** Caching for the estimated character height. (em) */
|
|
static double char_height = -1;
|
|
double textbox_get_estimated_char_height ( void )
|
|
{
|
|
if ( char_height < 0 ) {
|
|
int height = pango_font_metrics_get_ascent ( p_metrics ) + pango_font_metrics_get_descent ( p_metrics );
|
|
char_height = ( height ) / (double) PANGO_SCALE;
|
|
}
|
|
return char_height;
|
|
}
|
|
|
|
/** Caching for the expected character width. */
|
|
static double char_width = -1;
|
|
double textbox_get_estimated_char_width ( void )
|
|
{
|
|
if ( char_width < 0 ) {
|
|
int width = pango_font_metrics_get_approximate_char_width ( p_metrics );
|
|
char_width = ( width ) / (double) PANGO_SCALE;
|
|
}
|
|
return char_width;
|
|
}
|
|
|
|
/** Cache storing the estimated width of a digit (ch). */
|
|
static double ch_width = -1;
|
|
double textbox_get_estimated_ch ( void )
|
|
{
|
|
if ( ch_width < 0 ) {
|
|
int width = pango_font_metrics_get_approximate_digit_width ( p_metrics );
|
|
ch_width = ( width ) / (double) PANGO_SCALE;
|
|
}
|
|
return ch_width;
|
|
}
|
|
|
|
int textbox_get_estimated_height ( const textbox *tb, int eh )
|
|
{
|
|
int height = pango_font_metrics_get_ascent ( tb->metrics ) + pango_font_metrics_get_descent ( tb->metrics );
|
|
return ceil(( eh * height ) / (double)PANGO_SCALE) + widget_padding_get_padding_height ( WIDGET ( tb ) );
|
|
}
|
|
int textbox_get_desired_width ( widget *wid )
|
|
{
|
|
if ( wid == NULL ) {
|
|
return 0;
|
|
}
|
|
textbox *tb = (textbox *) wid;
|
|
unsigned int offset = ( ( tb->flags & TB_INDICATOR ) ? DOT_OFFSET : 0 );
|
|
if ( wid->expand && tb->flags & TB_AUTOWIDTH ) {
|
|
return textbox_get_font_width ( tb ) + widget_padding_get_padding_width ( wid ) + offset;
|
|
}
|
|
RofiDistance w = rofi_theme_get_distance ( WIDGET ( tb ), "width", 0 );
|
|
int wi = distance_get_pixel ( w, ROFI_ORIENTATION_HORIZONTAL );
|
|
if ( wi > 0 ) {
|
|
return wi;
|
|
}
|
|
int padding = widget_padding_get_left ( WIDGET ( tb ) );
|
|
padding += widget_padding_get_right ( WIDGET ( tb ) );
|
|
int old_width = pango_layout_get_width ( tb->layout );
|
|
pango_layout_set_width ( tb->layout, -1 );
|
|
int width = textbox_get_font_width ( tb );
|
|
// Restore.
|
|
pango_layout_set_width ( tb->layout, old_width );
|
|
return width + padding + offset;
|
|
}
|
|
|
|
void textbox_set_ellipsize ( textbox *tb, PangoEllipsizeMode mode )
|
|
{
|
|
if ( tb ) {
|
|
tb->emode = mode;
|
|
if ( ( tb->flags & TB_WRAP ) != TB_WRAP ) {
|
|
// Store the mode.
|
|
pango_layout_set_ellipsize ( tb->layout, tb->emode );
|
|
widget_queue_redraw ( WIDGET ( tb ) );
|
|
}
|
|
}
|
|
}
|