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rofi/source/widgets/box.c
Dave Davenport fd64bb7a41 Improve lexer by adding support for modes.
2016-12-12 23:40:43 +01:00

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/**
* rofi
*
* MIT/X11 License
* Modified 2016 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 <stdio.h>
#include "widgets/widget.h"
#include "widgets/widget-internal.h"
#include "widgets/box.h"
#include "theme.h"
#include "settings.h"
#define LOG_DOMAIN "Widgets.Box"
/**
* @param box Handle to the box widget.
* @param padding The padding to apply.
*
* Set the padding to apply between the children in pixels.
*/
void box_set_padding ( box * box, unsigned int padding );
struct _box
{
widget widget;
boxType type;
int max_size;
// Padding between elements
int padding;
GList *children;
};
static void box_update ( widget *wid );
static void vert_calculate_size ( box *b )
{
int expanding_widgets = 0;
int active_widgets = 0;
b->max_size = 0;
for ( GList *iter = g_list_first ( b->children ); iter != NULL; iter = g_list_next ( iter ) ) {
widget * child = (widget *) iter->data;
if ( !child->enabled ) {
continue;
}
active_widgets++;
if ( child->expand == TRUE ) {
expanding_widgets++;
continue;
}
b->max_size += child->h;
}
b->max_size += MAX ( 0, ( ( active_widgets - 1 ) * b->padding ) );
if ( b->max_size > b->widget.h ) {
g_log ( LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Widgets to large (height) for box: %d %d", b->max_size, b->widget.h );
return;
}
if ( active_widgets > 0 ) {
int bottom = b->widget.h;
int top = 0;
double rem = b->widget.h - b->max_size;
int index = 0;
for ( GList *iter = g_list_first ( b->children ); iter != NULL; iter = g_list_next ( iter ) ) {
widget * child = (widget *) iter->data;
if ( child->enabled == FALSE ) {
continue;
}
if ( child->expand == TRUE ) {
// Re-calculate to avoid round issues leaving one pixel left.
int expanding_widgets_size = ( rem ) / ( expanding_widgets - index );
if ( child->end ) {
bottom -= expanding_widgets_size;
widget_move ( child, child->x, bottom );
widget_resize ( child, b->widget.w, expanding_widgets_size );
bottom -= b->padding;
}
else {
widget_move ( child, child->x, top );
top += expanding_widgets_size;
widget_resize ( child, b->widget.w, expanding_widgets_size );
top += b->padding;
}
rem -= expanding_widgets_size;
index++;
}
else if ( child->end ) {
bottom -= widget_get_height ( child );
widget_move ( child, child->x, bottom );
widget_resize ( child, b->widget.w, child->h );
bottom -= b->padding;
}
else {
widget_move ( child, child->x, top );
top += widget_get_height ( child );
widget_resize ( child, b->widget.w, child->h );
top += b->padding;
}
}
}
}
static void hori_calculate_size ( box *b )
{
int expanding_widgets = 0;
int active_widgets = 0;
b->max_size = 0;
for ( GList *iter = g_list_first ( b->children ); iter != NULL; iter = g_list_next ( iter ) ) {
widget * child = (widget *) iter->data;
if ( !child->enabled ) {
continue;
}
active_widgets++;
if ( child->expand == TRUE ) {
expanding_widgets++;
continue;
}
// Size used by fixed width widgets.
b->max_size += child->w;
}
b->max_size += MAX ( 0, ( ( active_widgets - 1 ) * b->padding ) );
if ( b->max_size > b->widget.w ) {
g_log ( LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Widgets to large (width) for box: %d %d", b->max_size, b->widget.w );
return;
}
if ( active_widgets > 0 ) {
int right = b->widget.w;
int left = 0;
double rem = b->widget.w - b->max_size;
int index = 0;
for ( GList *iter = g_list_first ( b->children ); iter != NULL; iter = g_list_next ( iter ) ) {
widget * child = (widget *) iter->data;
if ( child->enabled == FALSE ) {
continue;
}
if ( child->expand == TRUE ) {
// Re-calculate to avoid round issues leaving one pixel left.
int expanding_widgets_size = ( rem ) / ( expanding_widgets - index );
if ( child->end ) {
right -= expanding_widgets_size;
widget_move ( child, right, child->y );
widget_resize ( child, expanding_widgets_size, b->widget.h );
right -= b->padding;
}
else {
widget_move ( child, left, child->y );
left += expanding_widgets_size;
widget_resize ( child, expanding_widgets_size, b->widget.h );
left += b->padding;
}
rem -= expanding_widgets_size;
index++;
}
else if ( child->end ) {
right -= widget_get_width ( child );
widget_move ( child, right, child->y );
widget_resize ( child, child->w, b->widget.h );
right -= b->padding;
}
else {
widget_move ( child, left, child->y );
left += widget_get_width ( child );
widget_resize ( child, child->w, b->widget.h );
left += b->padding;
}
}
}
}
static void box_draw ( widget *wid, cairo_t *draw )
{
box *b = (box *) wid;
// Store current state.
cairo_save ( draw );
// Define a clipmask so we won't draw outside out widget.
cairo_rectangle ( draw, wid->x, wid->y, wid->w, wid->h );
cairo_clip ( draw );
// Set new x/y possition.
cairo_translate ( draw, wid->x, wid->y );
for ( GList *iter = g_list_first ( b->children ); iter != NULL; iter = g_list_next ( iter ) ) {
widget * child = (widget *) iter->data;
widget_draw ( child, draw );
}
cairo_restore ( draw );
}
static void box_free ( widget *wid )
{
box *b = (box *) wid;
for ( GList *iter = g_list_first ( b->children ); iter != NULL; iter = g_list_next ( iter ) ) {
widget * child = (widget *) iter->data;
widget_free ( child );
}
g_list_free ( b->children );
g_free ( b );
}
void box_add ( box *box, widget *child, gboolean expand, gboolean end )
{
if ( box == NULL ) {
return;
}
child->expand = expand;
child->end = end;
child->parent = WIDGET ( box );
box->children = g_list_append ( box->children, (void *) child );
widget_update ( WIDGET ( box ) );
}
static void box_resize ( widget *widget, short w, short h )
{
box *b = (box *) widget;
if ( b->widget.w != w || b->widget.h != h ) {
b->widget.w = w;
b->widget.h = h;
widget_update ( widget );
}
}
static gboolean box_clicked ( widget *wid, xcb_button_press_event_t *xbe, G_GNUC_UNUSED void *udata )
{
box *b = (box *) wid;
for ( GList *iter = g_list_first ( b->children ); iter != NULL; iter = g_list_next ( iter ) ) {
widget * child = (widget *) iter->data;
if ( !child->enabled ) {
continue;
}
if ( widget_intersect ( child, xbe->event_x, xbe->event_y ) ) {
xcb_button_press_event_t rel = *xbe;
rel.event_x -= child->x;
rel.event_y -= child->y;
return widget_clicked ( child, &rel );
}
}
return FALSE;
}
static gboolean box_motion_notify ( widget *wid, xcb_motion_notify_event_t *xme )
{
box *b = (box *) wid;
for ( GList *iter = g_list_first ( b->children ); iter != NULL; iter = g_list_next ( iter ) ) {
widget * child = (widget *) iter->data;
if ( !child->enabled ) {
continue;
}
if ( widget_intersect ( child, xme->event_x, xme->event_y ) ) {
xcb_motion_notify_event_t rel = *xme;
rel.event_x -= child->x;
rel.event_y -= child->y;
return widget_motion_notify ( child, &rel );
}
}
return FALSE;
}
box * box_create ( const char *name, boxType type, short x, short y, short w, short h )
{
box *b = g_malloc0 ( sizeof ( box ) );
b->type = type;
b->widget.name = g_strdup (name);
b->widget.x = x;
b->widget.y = y;
b->widget.w = w;
b->widget.h = h;
b->widget.draw = box_draw;
b->widget.free = box_free;
b->widget.resize = box_resize;
b->widget.update = box_update;
b->widget.clicked = box_clicked;
b->widget.motion_notify = box_motion_notify;
b->widget.enabled = TRUE;
box_set_padding ( b, rofi_theme_get_integer ( "@box", b->widget.name, NULL, "padding",config.line_margin ));
return b;
}
static void box_update ( widget *wid )
{
box *b = (box *) wid;
switch ( b->type )
{
case BOX_VERTICAL:
vert_calculate_size ( b );
break;
case BOX_HORIZONTAL:
default:
hori_calculate_size ( b );
}
}
int box_get_fixed_pixels ( box *box )
{
if ( box != NULL ) {
return box->max_size;
}
return 0;
}
void box_set_padding ( box * box, unsigned int padding )
{
if ( box != NULL ) {
box->padding = padding;
widget_queue_redraw ( WIDGET ( box ) );
}
}
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