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rofi/source/widgets/listview.c
Quentin Glidic ac8868f3b1
Indent icon code rework 
Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
2017-05-31 20:21:58 +02:00

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/*
* rofi
*
* MIT/X11 License
* Copyright © 2013-2017 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.
*
*/
#include <config.h>
#include <glib.h>
#include <widgets/widget.h>
#include <widgets/textbox.h>
#include <widgets/listview.h>
#include <widgets/scrollbar.h>
#include "settings.h"
#include "theme.h"
#define DEFAULT_SPACING 2
struct _listview
{
widget widget;
// RChanged
// Text needs to be repainted.
unsigned int rchanged;
// Administration
unsigned int cur_page;
unsigned int last_offset;
unsigned int selected;
unsigned int element_height;
unsigned int element_width;
unsigned int max_rows;
unsigned int max_elements;
//
unsigned int cur_columns;
unsigned int req_elements;
unsigned int cur_elements;
Distance spacing;
unsigned int menu_lines;
unsigned int max_displayed_lines;
unsigned int menu_columns;
unsigned int fixed_num_lines;
unsigned int dynamic;
unsigned int eh;
unsigned int reverse;
gboolean cycle;
gboolean multi_select;
ScrollType scroll_type;
textbox **boxes;
scrollbar *scrollbar;
listview_update_callback callback;
void *udata;
xcb_timestamp_t last_click;
listview_mouse_activated_cb mouse_activated;
void *mouse_activated_data;
char *listview_name;
};
static int listview_get_desired_height ( widget *wid );
static void listview_free ( widget *wid )
{
listview *lv = (listview *) wid;
for ( unsigned int i = 0; i < lv->cur_elements; i++ ) {
widget_free ( WIDGET ( lv->boxes [i] ) );
}
g_free ( lv->boxes );
g_free ( lv->listview_name );
widget_free ( WIDGET ( lv->scrollbar ) );
g_free ( lv );
}
static unsigned int scroll_per_page ( listview * lv )
{
int offset = 0;
// selected row is always visible.
// If selected is visible do not scroll.
if ( ( ( lv->selected - ( lv->last_offset ) ) < ( lv->max_elements ) ) && ( lv->selected >= ( lv->last_offset ) ) ) {
offset = lv->last_offset;
}
else{
// Do paginating
unsigned int page = ( lv->max_elements > 0 ) ? ( lv->selected / lv->max_elements ) : 0;
offset = page * lv->max_elements;
if ( page != lv->cur_page ) {
lv->cur_page = page;
lv->rchanged = TRUE;
}
// Set the position
//scrollbar_set_handle ( lv->scrollbar, page * lv->max_elements );
}
return offset;
}
static unsigned int scroll_continious ( listview *lv )
{
unsigned int middle = ( lv->max_rows - ( ( lv->max_rows & 1 ) == 0 ) ) / 2;
unsigned int offset = 0;
if ( lv->selected > middle ) {
if ( lv->selected < ( lv->req_elements - ( lv->max_rows - middle ) ) ) {
offset = lv->selected - middle;
}
// Don't go below zero.
else if ( lv->req_elements > lv->max_rows ) {
offset = lv->req_elements - lv->max_rows;
}
}
if ( offset != lv->cur_page ) {
//scrollbar_set_handle ( lv->scrollbar, offset );
lv->cur_page = offset;
lv->rchanged = TRUE;
}
return offset;
}
static void update_element ( listview *lv, unsigned int tb, unsigned int index, gboolean full )
{
// Select drawing mode
TextBoxFontType type = ( index & 1 ) == 0 ? NORMAL : ALT;
type = ( index ) == lv->selected ? HIGHLIGHT : type;
if ( lv->callback ) {
lv->callback ( lv->boxes[tb], index, lv->udata, type, full );
}
}
static void listview_draw ( widget *wid, cairo_t *draw )
{
unsigned int offset = 0;
listview *lv = (listview *) wid;
if ( lv->scroll_type == LISTVIEW_SCROLL_CONTINIOUS ) {
offset = scroll_continious ( lv );
}
else {
offset = scroll_per_page ( lv );
}
// Set these all together to make sure they update consistently.
scrollbar_set_max_value ( lv->scrollbar, lv->req_elements );
scrollbar_set_handle_length ( lv->scrollbar, lv->cur_columns * lv->max_rows );
if ( lv->reverse ) {
scrollbar_set_handle ( lv->scrollbar, lv->req_elements - lv->selected - 1 );
}
else {
scrollbar_set_handle ( lv->scrollbar, lv->selected );
}
lv->last_offset = offset;
int spacing_vert = distance_get_pixel ( lv->spacing, ORIENTATION_VERTICAL );
int spacing_hori = distance_get_pixel ( lv->spacing, ORIENTATION_HORIZONTAL );
int left_offset = widget_padding_get_left ( wid );
int top_offset = widget_padding_get_top ( wid );
if ( lv->scrollbar->widget.index == 0 ) {
left_offset += spacing_hori + lv->scrollbar->widget.w;
}
if ( lv->cur_elements > 0 && lv->max_rows > 0 ) {
// Set new x/y possition.
unsigned int max = MIN ( lv->cur_elements, lv->req_elements - offset );
if ( lv->rchanged ) {
unsigned int width = lv->widget.w - spacing_hori * ( lv->cur_columns - 1 );
width -= widget_padding_get_padding_width ( wid );
if ( widget_enabled ( WIDGET ( lv->scrollbar ) ) ) {
width -= spacing_hori;
width -= widget_get_width ( WIDGET ( lv->scrollbar ) );
}
unsigned int element_width = ( width ) / lv->cur_columns;
for ( unsigned int i = 0; i < max; i++ ) {
unsigned int ex = left_offset + ( ( i ) / lv->max_rows ) * ( element_width + spacing_hori );
if ( lv->reverse ) {
unsigned int ey = wid->h - ( widget_padding_get_bottom ( wid ) + ( ( i ) % lv->max_rows ) * ( lv->element_height + spacing_vert ) ) - lv->element_height;
textbox_moveresize ( lv->boxes[i], ex, ey, element_width, lv->element_height );
}
else {
unsigned int ey = top_offset + ( ( i ) % lv->max_rows ) * ( lv->element_height + spacing_vert );
textbox_moveresize ( lv->boxes[i], ex, ey, element_width, lv->element_height );
}
update_element ( lv, i, i + offset, TRUE );
widget_draw ( WIDGET ( lv->boxes[i] ), draw );
}
lv->rchanged = FALSE;
}
else {
for ( unsigned int i = 0; i < max; i++ ) {
update_element ( lv, i, i + offset, FALSE );
widget_draw ( WIDGET ( lv->boxes[i] ), draw );
}
}
}
widget_draw ( WIDGET ( lv->scrollbar ), draw );
}
static WidgetTriggerActionResult listview_element_trigger_action ( widget *wid, MouseBindingListviewElementAction action, gint x, gint y, void *user_data );
static void listview_recompute_elements ( listview *lv )
{
unsigned int newne = 0;
if ( lv->max_rows == 0 ) {
return;
}
if ( lv->req_elements < lv->max_elements ) {
newne = lv->req_elements;
lv->cur_columns = ( lv->req_elements + ( lv->max_rows - 1 ) ) / lv->max_rows;
}
else {
newne = lv->max_elements;
lv->cur_columns = lv->menu_columns;
}
for ( unsigned int i = newne; i < lv->cur_elements; i++ ) {
widget_free ( WIDGET ( lv->boxes[i] ) );
}
lv->boxes = g_realloc ( lv->boxes, newne * sizeof ( textbox* ) );
if ( newne > 0 ) {
char *name = g_strjoin ( ".", lv->listview_name, "element", NULL );
for ( unsigned int i = lv->cur_elements; i < newne; i++ ) {
TextboxFlags flags = ( lv->multi_select ) ? TB_INDICATOR : 0;
flags |= ( ( config.show_icons ) ? TB_ICON : 0 );
lv->boxes[i] = textbox_create_full ( WIDGET_TYPE_LISTVIEW_ELEMENT, name, flags, NORMAL, "" );
widget_set_trigger_action_handler ( WIDGET ( lv->boxes[i] ), listview_element_trigger_action, lv );
}
g_free ( name );
}
lv->rchanged = TRUE;
lv->cur_elements = newne;
}
void listview_set_num_elements ( listview *lv, unsigned int rows )
{
lv->req_elements = rows;
listview_set_selected ( lv, lv->selected );
listview_recompute_elements ( lv );
widget_queue_redraw ( WIDGET ( lv ) );
}
unsigned int listview_get_selected ( listview *lv )
{
if ( lv != NULL ) {
return lv->selected;
}
return 0;
}
void listview_set_selected ( listview *lv, unsigned int selected )
{
if ( lv && lv->req_elements > 0 ) {
lv->selected = MIN ( selected, lv->req_elements - 1 );
widget_queue_redraw ( WIDGET ( lv ) );
}
}
static void listview_resize ( widget *wid, short w, short h )
{
listview *lv = (listview *) wid;
lv->widget.w = MAX ( 0, w );
lv->widget.h = MAX ( 0, h );
int height = lv->widget.h - widget_padding_get_padding_height ( WIDGET ( lv ) );
int spacing_vert = distance_get_pixel ( lv->spacing, ORIENTATION_VERTICAL );
lv->max_rows = ( spacing_vert + height ) / ( lv->element_height + spacing_vert );
lv->max_elements = lv->max_rows * lv->menu_columns;
if ( lv->scrollbar->widget.index == 0 ) {
widget_move ( WIDGET ( lv->scrollbar ),
widget_padding_get_left ( WIDGET ( lv ) ),
widget_padding_get_top ( WIDGET ( lv ) ) );
}
else {
widget_move ( WIDGET ( lv->scrollbar ),
lv->widget.w - widget_padding_get_right ( WIDGET ( lv ) ) - widget_get_width ( WIDGET ( lv->scrollbar ) ),
widget_padding_get_top ( WIDGET ( lv ) ) );
}
widget_resize ( WIDGET ( lv->scrollbar ), widget_get_width ( WIDGET ( lv->scrollbar ) ), height );
listview_recompute_elements ( lv );
widget_queue_redraw ( wid );
}
static widget *listview_find_mouse_target ( widget *wid, WidgetType type, gint x, gint y )
{
widget *target = NULL;
gint rx, ry;
listview *lv = (listview *) wid;
if ( widget_enabled ( WIDGET ( lv->scrollbar ) ) && widget_intersect ( WIDGET ( lv->scrollbar ), x, y ) ) {
rx = x - widget_get_x_pos ( WIDGET ( lv->scrollbar ) );
ry = y - widget_get_y_pos ( WIDGET ( lv->scrollbar ) );
target = widget_find_mouse_target ( WIDGET ( lv->scrollbar ), type, rx, ry );
}
unsigned int max = MIN ( lv->cur_elements, lv->req_elements - lv->last_offset );
unsigned int i;
for ( i = 0; i < max && target == NULL; i++ ) {
widget *w = WIDGET ( lv->boxes[i] );
if ( widget_intersect ( w, x, y ) ) {
rx = x - widget_get_x_pos ( w );
ry = y - widget_get_y_pos ( w );
target = widget_find_mouse_target ( w, type, rx, ry );
}
}
return target;
}
static WidgetTriggerActionResult listview_trigger_action ( widget *wid, MouseBindingListviewAction action, G_GNUC_UNUSED gint x, G_GNUC_UNUSED gint y, G_GNUC_UNUSED void *user_data )
{
listview *lv = (listview *) wid;
switch ( action )
{
case SCROLL_LEFT:
listview_nav_left ( lv );
break;
case SCROLL_RIGHT:
listview_nav_right ( lv );
break;
case SCROLL_DOWN:
listview_nav_down ( lv );
break;
case SCROLL_UP:
listview_nav_up ( lv );
break;
}
return WIDGET_TRIGGER_ACTION_RESULT_HANDLED;
}
static WidgetTriggerActionResult listview_element_trigger_action ( widget *wid, MouseBindingListviewElementAction action, G_GNUC_UNUSED gint x, G_GNUC_UNUSED gint y, void *user_data )
{
listview *lv = (listview *) user_data;
unsigned int max = MIN ( lv->cur_elements, lv->req_elements - lv->last_offset );
unsigned int i;
for ( i = 0; i < max && WIDGET ( lv->boxes[i] ) != wid; i++ ) {
}
if ( i == max ) {
return WIDGET_TRIGGER_ACTION_RESULT_IGNORED;
}
gboolean custom = FALSE;
switch ( action )
{
case SELECT_HOVERED_ENTRY:
listview_set_selected ( lv, lv->last_offset + i );
break;
case ACCEPT_HOVERED_CUSTOM:
custom = TRUE;
case ACCEPT_HOVERED_ENTRY:
listview_set_selected ( lv, lv->last_offset + i );
lv->mouse_activated ( lv, custom, lv->mouse_activated_data );
break;
}
return WIDGET_TRIGGER_ACTION_RESULT_HANDLED;
}
listview *listview_create ( const char *name, listview_update_callback cb, void *udata, unsigned int eh, gboolean reverse )
{
listview *lv = g_malloc0 ( sizeof ( listview ) );
gchar *box = g_strjoin ( ".", name, "box", NULL );
widget_init ( WIDGET ( lv ), WIDGET_TYPE_LISTVIEW, box );
g_free ( box );
lv->listview_name = g_strdup ( name );
lv->widget.free = listview_free;
lv->widget.resize = listview_resize;
lv->widget.draw = listview_draw;
lv->widget.find_mouse_target = listview_find_mouse_target;
lv->widget.trigger_action = listview_trigger_action;
lv->widget.get_desired_height = listview_get_desired_height;
lv->widget.enabled = rofi_theme_get_boolean ( WIDGET ( lv ), "enabled", TRUE );
lv->eh = eh;
char *n = g_strjoin ( ".", lv->listview_name, "scrollbar", NULL );
lv->scrollbar = scrollbar_create ( n );
// Default position on right.
lv->scrollbar->widget.index = rofi_theme_get_integer_exact ( WIDGET ( lv->scrollbar ), "index", 1 );
g_free ( n );
lv->scrollbar->widget.parent = WIDGET ( lv );
// Calculate height of an element.
//
char *tb_name = g_strjoin ( ".", lv->listview_name, "element", NULL );
textbox *tb = textbox_create_full ( WIDGET_TYPE_LISTVIEW_ELEMENT, tb_name, 0, NORMAL, "" );
lv->element_height = textbox_get_estimated_height ( tb, lv->eh );
g_free ( tb_name );
widget_free ( WIDGET ( tb ) );
lv->callback = cb;
lv->udata = udata;
// Some settings.
lv->spacing = rofi_theme_get_distance ( WIDGET ( lv ), "spacing", DEFAULT_SPACING );
lv->menu_columns = rofi_theme_get_integer ( WIDGET ( lv ), "columns", config.menu_columns );
lv->fixed_num_lines = rofi_theme_get_boolean ( WIDGET ( lv ), "fixed-height", config.fixed_num_lines );
lv->dynamic = rofi_theme_get_boolean ( WIDGET ( lv ), "dynamic", TRUE );
lv->reverse = rofi_theme_get_boolean ( WIDGET ( lv ), "reverse", reverse );
listview_set_show_scrollbar ( lv, rofi_theme_get_boolean ( WIDGET ( lv ), "scrollbar", FALSE ) );
lv->cycle = rofi_theme_get_boolean ( WIDGET ( lv ), "cycle", config.cycle );
return lv;
}
/**
* Navigation commands.
*/
static void listview_nav_up_int ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->req_elements == 0 || ( lv->selected == 0 && !lv->cycle ) ) {
return;
}
if ( lv->selected == 0 ) {
lv->selected = lv->req_elements;
}
lv->selected--;
widget_queue_redraw ( WIDGET ( lv ) );
}
static void listview_nav_down_int ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->req_elements == 0 || ( lv->selected == ( lv->req_elements - 1 ) && !lv->cycle ) ) {
return;
}
lv->selected = lv->selected < lv->req_elements - 1 ? MIN ( lv->req_elements - 1, lv->selected + 1 ) : 0;
widget_queue_redraw ( WIDGET ( lv ) );
}
void listview_nav_up ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->reverse ) {
listview_nav_down_int ( lv );
}
else {
listview_nav_up_int ( lv );
}
}
void listview_nav_down ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->reverse ) {
listview_nav_up_int ( lv );
}
else {
listview_nav_down_int ( lv );
}
}
void listview_nav_left ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->selected >= lv->max_rows ) {
lv->selected -= lv->max_rows;
widget_queue_redraw ( WIDGET ( lv ) );
}
}
void listview_nav_right ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( ( lv->selected + lv->max_rows ) < lv->req_elements ) {
lv->selected += lv->max_rows;
widget_queue_redraw ( WIDGET ( lv ) );
}
else if ( lv->selected < ( lv->req_elements - 1 ) ) {
// We do not want to move to last item, UNLESS the last column is only
// partially filled, then we still want to move column and select last entry.
// First check the column we are currently in.
int col = lv->selected / lv->max_rows;
// Check total number of columns.
int ncol = lv->req_elements / lv->max_rows;
// If there is an extra column, move.
if ( col != ncol ) {
lv->selected = lv->req_elements - 1;
widget_queue_redraw ( WIDGET ( lv ) );
}
}
}
static void listview_nav_page_prev_int ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->selected < lv->max_elements ) {
lv->selected = 0;
}
else{
lv->selected -= ( lv->max_elements );
}
widget_queue_redraw ( WIDGET ( lv ) );
}
static void listview_nav_page_next_int ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->req_elements == 0 ) {
return;
}
lv->selected += ( lv->max_elements );
if ( lv->selected >= lv->req_elements ) {
lv->selected = lv->req_elements - 1;
}
widget_queue_redraw ( WIDGET ( lv ) );
}
void listview_nav_page_prev ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->reverse ) {
listview_nav_page_next_int ( lv );
}
else {
listview_nav_page_prev_int ( lv );
}
}
void listview_nav_page_next ( listview *lv )
{
if ( lv == NULL ) {
return;
}
if ( lv->reverse ) {
listview_nav_page_prev_int ( lv );
}
else {
listview_nav_page_next_int ( lv );
}
}
static int listview_get_desired_height ( widget *wid )
{
listview *lv = (listview *) wid;
if ( lv == NULL || lv->widget.enabled == FALSE ) {
return 0;
}
int spacing = distance_get_pixel ( lv->spacing, ORIENTATION_VERTICAL );
int h = lv->menu_lines;
if ( !( lv->fixed_num_lines ) ) {
if ( lv->dynamic ) {
h = MIN ( lv->menu_lines, lv->req_elements );
}
else {
h = MIN ( lv->menu_lines, lv->max_displayed_lines );
}
}
if ( h == 0 ) {
if ( lv->dynamic && !lv->fixed_num_lines ) {
// Hide widget fully.
return 0;
}
return widget_padding_get_padding_height ( WIDGET ( lv ) );
}
int height = widget_padding_get_padding_height ( WIDGET ( lv ) );
height += h * ( lv->element_height + spacing ) - spacing;
return height;
}
void listview_set_show_scrollbar ( listview *lv, gboolean enabled )
{
if ( lv ) {
if ( enabled ) {
widget_enable ( WIDGET ( lv->scrollbar ) );
}
else {
widget_disable ( WIDGET ( lv->scrollbar ) );
}
listview_recompute_elements ( lv );
}
}
void listview_set_scroll_type ( listview *lv, ScrollType type )
{
if ( lv ) {
lv->scroll_type = type;
}
}
void listview_set_mouse_activated_cb ( listview *lv, listview_mouse_activated_cb cb, void *udata )
{
if ( lv ) {
lv->mouse_activated = cb;
lv->mouse_activated_data = udata;
}
}
void listview_set_multi_select ( listview *lv, gboolean enable )
{
if ( lv ) {
lv->multi_select = enable;
}
}
void listview_set_num_lines ( listview *lv, unsigned int num_lines )
{
if ( lv ) {
lv->menu_lines = num_lines;
}
}
unsigned int listview_get_num_lines ( listview *lv )
{
if ( lv ) {
return lv->menu_lines;
}
return 0;
}
void listview_set_max_lines ( listview *lv, unsigned int max_lines )
{
if ( lv ) {
lv->max_displayed_lines = max_lines;
}
}
gboolean listview_get_fixed_num_lines ( listview *lv )
{
if ( lv ) {
return lv->fixed_num_lines;
}
return FALSE;
}
void listview_set_fixed_num_lines ( listview *lv )
{
if ( lv ) {
lv->fixed_num_lines = TRUE;
}
}
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