mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-17 14:30:15 +00:00
levelbar: Port to use CSS nodes
Use element names levelbar, trough, block, and some style classes on the block nodes: .discrete, .continuous, .empty, .level-low, etc.
This commit is contained in:
Matthias Clasen
parent
601cbbcc87
commit
17f110433d
@ -46,26 +46,24 @@
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* widget = gtk_level_bar_new ();
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* bar = GTK_LEVEL_BAR (widget);
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*
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* /<!---->* This changes the value of the default low offset
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* *<!---->/
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* // This changes the value of the default low offset
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*
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* gtk_level_bar_add_offset_value (bar,
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* GTK_LEVEL_BAR_OFFSET_LOW,
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* 0.10);
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*
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* /<!---->* This adds a new offset to the bar; the application will
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* be able to change its color by using the following selector,
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* either by adding it to its CSS file or using
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* gtk_css_provider_load_from_data() and
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* gtk_style_context_add_provider()
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*
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* * .level-bar.fill-block.level-my-offset {
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* * background-color: green;
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* * border-style: solid;
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* * border-color: black;
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* * border-style: 1px;
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* * }
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* *<!---->/
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* // This adds a new offset to the bar; the application will
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* // be able to change its color by using the following selector,
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* // either by adding it to its CSS file or using
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* // gtk_css_provider_load_from_data() and
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* // gtk_style_context_add_provider()
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* //
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* // .level-bar.fill-block.level-my-offset {
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* // background-color: green;
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* // border-style: solid;
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* // border-color: black;
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* // border-style: 1px;
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* // }
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*
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* gtk_level_bar_add_offset_value (bar, "my-offset", 0.60);
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*
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@ -82,11 +80,27 @@
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* as a finite and number of separated blocks instead of a single one. The number
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* of blocks that will be rendered is equal to the number of units specified by
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* the admissible interval.
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*
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* For instance, to build a bar rendered with five blocks, it’s sufficient to
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* set the minimum value to 0 and the maximum value to 5 after changing the indicator
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* mode to discrete.
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*
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* Since: 3.6
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*
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* # CSS nodes
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*
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* |[<!-- language="plain" -->
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* levelbar
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* ╰── trough
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* ├── block.filled[.discrete].level-<name>
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* ╰── block.empty[.discrete]
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* ]|
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*
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* GtkLevelBar has a main CSS node with name levelbar, a subnode with name trough,
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* and blow that a node with name block and style class .filled and a node with
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* name block and style class .empty. Both block nodes get one of the style
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* classes .discrete or .continuous, and the block.filled node gets a style class
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* .level-<name> corresponding to the level for the current value.
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*/
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#include "config.h"
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@ -100,6 +114,9 @@
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#include "gtktypebuiltins.h"
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#include "gtkwidget.h"
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#include "gtkwidgetprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtkcssstylepropertyprivate.h"
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#include "gtkcssnodeprivate.h"
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#include <math.h>
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#include <stdlib.h>
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@ -110,13 +127,6 @@
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#define DEFAULT_BLOCK_SIZE 3
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/* these don't make sense outside of GtkLevelBar, so we don't add
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* global defines */
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#define STYLE_CLASS_INDICATOR_CONTINUOUS "indicator-continuous"
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#define STYLE_CLASS_INDICATOR_DISCRETE "indicator-discrete"
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#define STYLE_CLASS_FILL_BLOCK "fill-block"
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#define STYLE_CLASS_EMPTY_FILL_BLOCK "empty-fill-block"
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enum {
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PROP_VALUE = 1,
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PROP_MIN_VALUE,
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@ -151,7 +161,9 @@ struct _GtkLevelBarPrivate {
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GList *offsets;
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gchar *cur_value_class;
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GtkCssNode *trough_node;
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GtkCssNode *filled_node;
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GtkCssNode *empty_node;
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guint inverted : 1;
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};
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@ -247,16 +259,17 @@ gtk_level_bar_get_min_block_size (GtkLevelBar *self,
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gint *block_height)
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{
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GtkWidget *widget = GTK_WIDGET (self);
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GtkStyleContext *context = gtk_widget_get_style_context (widget);
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GtkStateFlags flags = gtk_widget_get_state_flags (widget);
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GtkStyleContext *context;
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GtkStateFlags state;
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GtkBorder border, tmp, tmp2;
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gint min_width, min_height;
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gtk_style_context_save (context);
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gtk_style_context_add_class (context, STYLE_CLASS_FILL_BLOCK);
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gtk_style_context_get_border (context, flags, &border);
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gtk_style_context_get_padding (context, flags, &tmp);
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gtk_style_context_get_margin (context, flags, &tmp2);
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context = gtk_widget_get_style_context (widget);
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gtk_style_context_save_to_node (context, self->priv->filled_node);
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state = gtk_style_context_get_state (context);
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gtk_style_context_get_border (context, state, &border);
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gtk_style_context_get_padding (context, state, &tmp);
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gtk_style_context_get_margin (context, state, &tmp2);
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gtk_style_context_restore (context);
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gtk_style_context_get_style (context,
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@ -296,14 +309,15 @@ gtk_level_bar_get_borders (GtkLevelBar *self,
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GtkBorder *borders_out)
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{
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GtkWidget *widget = GTK_WIDGET (self);
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GtkStyleContext *context = gtk_widget_get_style_context (widget);
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GtkStateFlags flags = gtk_widget_get_state_flags (widget);
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GtkStyleContext *context;
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GtkStateFlags state;
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GtkBorder border, tmp;
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gtk_style_context_save (context);
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gtk_style_context_add_class (context, GTK_STYLE_CLASS_TROUGH);
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gtk_style_context_get_border (context, flags, &border);
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gtk_style_context_get_padding (context, flags, &tmp);
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context = gtk_widget_get_style_context (widget);
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gtk_style_context_save_to_node (context, self->priv->trough_node);
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state = gtk_style_context_get_state (context);
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gtk_style_context_get_border (context, state, &border);
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gtk_style_context_get_padding (context, state, &tmp);
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gtk_style_context_restore (context);
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border.top += tmp.top;
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@ -322,15 +336,15 @@ gtk_level_bar_draw_fill_continuous (GtkLevelBar *self,
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cairo_rectangle_int_t *fill_area)
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{
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GtkWidget *widget = GTK_WIDGET (self);
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GtkStyleContext *context = gtk_widget_get_style_context (widget);
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GtkStateFlags flags = gtk_widget_get_state_flags (widget);
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GtkStyleContext *context;
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cairo_rectangle_int_t base_area, block_area;
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GtkBorder block_margin;
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gdouble fill_percentage;
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gtk_style_context_save (context);
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gtk_style_context_add_class (context, STYLE_CLASS_FILL_BLOCK);
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gtk_style_context_get_margin (context, flags, &block_margin);
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context = gtk_widget_get_style_context (widget);
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gtk_style_context_save_to_node (context, self->priv->empty_node);
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gtk_style_context_get_margin (context, gtk_style_context_get_state (context), &block_margin);
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/* render the empty (unfilled) part */
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base_area = *fill_area;
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@ -339,20 +353,16 @@ gtk_level_bar_draw_fill_continuous (GtkLevelBar *self,
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base_area.width -= block_margin.left + block_margin.right;
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base_area.height -= block_margin.top + block_margin.bottom;
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if (self->priv->cur_value_class)
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gtk_style_context_remove_class (context, self->priv->cur_value_class);
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gtk_style_context_add_class (context, STYLE_CLASS_EMPTY_FILL_BLOCK);
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gtk_render_background (context, cr, base_area.x, base_area.y,
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base_area.width, base_area.height);
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gtk_render_frame (context, cr, base_area.x, base_area.y,
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base_area.width, base_area.height);
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gtk_style_context_remove_class (context, STYLE_CLASS_EMPTY_FILL_BLOCK);
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if (self->priv->cur_value_class)
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gtk_style_context_add_class (context, self->priv->cur_value_class);
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gtk_style_context_restore (context);
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/* now render the filled part on top of it */
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gtk_style_context_save_to_node (context, self->priv->filled_node);
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block_area = base_area;
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fill_percentage = (self->priv->cur_value - self->priv->min_value) /
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@ -388,14 +398,14 @@ gtk_level_bar_draw_fill_discrete (GtkLevelBar *self,
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cairo_rectangle_int_t *fill_area)
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{
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GtkWidget *widget = GTK_WIDGET (self);
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GtkStyleContext *context = gtk_widget_get_style_context (widget);
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GtkStateFlags flags = gtk_widget_get_state_flags (widget);
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gint num_blocks, num_filled, idx;
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GtkStyleContext *context;
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gint num_blocks, num_filled, i;
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gint block_width, block_height;
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gint block_draw_width, block_draw_height;
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GtkBorder block_margin;
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cairo_rectangle_int_t block_area;
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context = gtk_widget_get_style_context (widget);
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gtk_level_bar_get_min_block_size (self, &block_width, &block_height);
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block_area = *fill_area;
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@ -407,9 +417,8 @@ gtk_level_bar_draw_fill_discrete (GtkLevelBar *self,
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else
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block_height = MAX (block_height, (gint) floor (block_area.height / num_blocks));
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gtk_style_context_save (context);
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gtk_style_context_add_class (context, STYLE_CLASS_FILL_BLOCK);
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gtk_style_context_get_margin (context, flags, &block_margin);
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gtk_style_context_save_to_node (context, self->priv->filled_node);
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gtk_style_context_get_margin (context, gtk_style_context_get_state (context), &block_margin);
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block_draw_width = block_width - block_margin.left - block_margin.right;
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block_draw_height = block_height - block_margin.top - block_margin.bottom;
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@ -431,7 +440,7 @@ gtk_level_bar_draw_fill_discrete (GtkLevelBar *self,
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block_area.y += block_area.height - block_draw_height;
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}
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for (idx = 0; idx < num_blocks; idx++)
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for (i = 0; i < num_blocks; i++)
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{
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if (self->priv->orientation == GTK_ORIENTATION_HORIZONTAL)
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{
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@ -448,11 +457,10 @@ gtk_level_bar_draw_fill_discrete (GtkLevelBar *self,
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block_area.y += block_margin.top;
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}
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if (idx > num_filled - 1)
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if (i == num_filled)
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{
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gtk_style_context_add_class (context, STYLE_CLASS_EMPTY_FILL_BLOCK);
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if (self->priv->cur_value_class != NULL)
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gtk_style_context_remove_class (context, self->priv->cur_value_class);
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gtk_style_context_restore (context);
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gtk_style_context_save_to_node (context, self->priv->empty_node);
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}
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gtk_render_background (context, cr,
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@ -517,14 +525,14 @@ gtk_level_bar_draw (GtkWidget *widget,
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cairo_t *cr)
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{
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GtkLevelBar *self = GTK_LEVEL_BAR (widget);
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GtkStyleContext *context = gtk_widget_get_style_context (widget);
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GtkStyleContext *context;
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gint width, height;
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width = gtk_widget_get_allocated_width (widget);
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height = gtk_widget_get_allocated_height (widget);
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gtk_style_context_save (context);
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gtk_style_context_add_class (context, GTK_STYLE_CLASS_TROUGH);
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context = gtk_widget_get_style_context (widget);
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gtk_style_context_save_to_node (context, self->priv->trough_node);
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gtk_render_background (context, cr, 0, 0, width, height);
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gtk_render_frame (context, cr, 0, 0, width, height);
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@ -598,35 +606,55 @@ gtk_level_bar_size_allocate (GtkWidget *widget,
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static void
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gtk_level_bar_update_mode_style_classes (GtkLevelBar *self)
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{
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GtkStyleContext *context = gtk_widget_get_style_context (GTK_WIDGET (self));
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GtkLevelBarPrivate *priv = self->priv;
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if (self->priv->bar_mode == GTK_LEVEL_BAR_MODE_CONTINUOUS)
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if (priv->bar_mode == GTK_LEVEL_BAR_MODE_CONTINUOUS)
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{
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gtk_style_context_remove_class (context, STYLE_CLASS_INDICATOR_DISCRETE);
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gtk_style_context_add_class (context, STYLE_CLASS_INDICATOR_CONTINUOUS);
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gtk_css_node_remove_class (priv->filled_node, g_quark_from_static_string ("discrete"));
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gtk_css_node_add_class (priv->filled_node, g_quark_from_static_string ("continuous"));
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gtk_css_node_remove_class (priv->empty_node, g_quark_from_static_string ("discrete"));
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gtk_css_node_add_class (priv->empty_node, g_quark_from_static_string ("continuous"));
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}
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else if (self->priv->bar_mode == GTK_LEVEL_BAR_MODE_DISCRETE)
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else if (priv->bar_mode == GTK_LEVEL_BAR_MODE_DISCRETE)
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{
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gtk_style_context_remove_class (context, STYLE_CLASS_INDICATOR_CONTINUOUS);
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gtk_style_context_add_class (context, STYLE_CLASS_INDICATOR_DISCRETE);
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gtk_css_node_add_class (priv->filled_node, g_quark_from_static_string ("discrete"));
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gtk_css_node_remove_class (priv->filled_node, g_quark_from_static_string ("continuous"));
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gtk_css_node_add_class (priv->empty_node, g_quark_from_static_string ("discrete"));
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gtk_css_node_remove_class (priv->empty_node, g_quark_from_static_string ("continuous"));
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}
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}
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static void
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gtk_level_bar_state_flags_changed (GtkWidget *widget,
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GtkStateFlags previous_state)
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{
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GtkLevelBar *self = GTK_LEVEL_BAR (widget);
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GtkLevelBarPrivate *priv = self->priv;
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GtkStateFlags state;
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state = gtk_widget_get_state_flags (widget);
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gtk_css_node_set_state (priv->trough_node, state);
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gtk_css_node_set_state (priv->filled_node, state);
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gtk_css_node_set_state (priv->empty_node, state);
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}
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static void
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gtk_level_bar_update_level_style_classes (GtkLevelBar *self)
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{
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GtkStyleContext *context = gtk_widget_get_style_context (GTK_WIDGET (self));
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gdouble value = gtk_level_bar_get_value (self);
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gdouble value;
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gchar *offset_style_class, *value_class = NULL;
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GtkLevelBarOffset *offset, *prev_offset;
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GList *l;
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value = gtk_level_bar_get_value (self);
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for (l = self->priv->offsets; l != NULL; l = l->next)
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{
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offset = l->data;
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offset_style_class = g_strconcat ("level-", offset->name, NULL);
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gtk_style_context_remove_class (context, offset_style_class);
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gtk_css_node_remove_class (self->priv->filled_node, g_quark_from_string (offset_style_class));
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/* find the right offset for our style class */
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if (((l->prev == NULL) && (value <= offset->value)) ||
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@ -646,12 +674,10 @@ gtk_level_bar_update_level_style_classes (GtkLevelBar *self)
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}
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}
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g_clear_pointer (&self->priv->cur_value_class, g_free);
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if (value_class != NULL)
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{
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gtk_style_context_add_class (context, value_class);
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self->priv->cur_value_class = value_class;
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gtk_css_node_add_class (self->priv->filled_node, g_quark_from_string (value_class));
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g_free (value_class);
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}
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}
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@ -889,7 +915,6 @@ gtk_level_bar_finalize (GObject *obj)
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GtkLevelBar *self = GTK_LEVEL_BAR (obj);
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g_list_free_full (self->priv->offsets, (GDestroyNotify) gtk_level_bar_offset_free);
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g_free (self->priv->cur_value_class);
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G_OBJECT_CLASS (gtk_level_bar_parent_class)->finalize (obj);
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}
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@ -908,6 +933,7 @@ gtk_level_bar_class_init (GtkLevelBarClass *klass)
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wclass->size_allocate = gtk_level_bar_size_allocate;
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wclass->get_preferred_width = gtk_level_bar_get_preferred_width;
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wclass->get_preferred_height = gtk_level_bar_get_preferred_height;
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wclass->state_flags_changed = gtk_level_bar_state_flags_changed;
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g_object_class_override_property (oclass, PROP_ORIENTATION, "orientation");
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@ -1049,36 +1075,83 @@ gtk_level_bar_class_init (GtkLevelBarClass *klass)
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g_object_class_install_properties (oclass, LAST_PROPERTY, properties);
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gtk_widget_class_set_accessible_type (wclass, GTK_TYPE_LEVEL_BAR_ACCESSIBLE);
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gtk_widget_class_set_css_name (wclass, "levelbar");
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}
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static void
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node_style_changed_cb (GtkCssNode *node,
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GtkCssStyle *old_style,
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GtkCssStyle *new_style,
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GtkWidget *widget)
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{
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GtkBitmask *changes;
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static GtkBitmask *affects_size = NULL;
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if (G_UNLIKELY (affects_size == NULL))
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affects_size = _gtk_css_style_property_get_mask_affecting (GTK_CSS_AFFECTS_SIZE | GTK_CSS_AFFECTS_CLIP);
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changes = _gtk_bitmask_new ();
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changes = gtk_css_style_add_difference (changes, old_style, new_style);
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if (_gtk_bitmask_intersects (changes, affects_size))
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gtk_widget_queue_resize (widget);
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else
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gtk_widget_queue_draw (widget);
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|
||||
_gtk_bitmask_free (changes);
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_level_bar_init (GtkLevelBar *self)
|
||||
{
|
||||
GtkStyleContext *context;
|
||||
GtkLevelBarPrivate *priv;
|
||||
GtkCssNode *widget_node;
|
||||
|
||||
self->priv = gtk_level_bar_get_instance_private (self);
|
||||
priv = self->priv = gtk_level_bar_get_instance_private (self);
|
||||
|
||||
context = gtk_widget_get_style_context (GTK_WIDGET (self));
|
||||
gtk_style_context_add_class (context, GTK_STYLE_CLASS_LEVEL_BAR);
|
||||
priv->cur_value = 0.0;
|
||||
priv->min_value = 0.0;
|
||||
priv->max_value = 1.0;
|
||||
|
||||
self->priv->cur_value = 0.0;
|
||||
self->priv->min_value = 0.0;
|
||||
self->priv->max_value = 1.0;
|
||||
/* set initial orientation and style classes */
|
||||
priv->orientation = GTK_ORIENTATION_HORIZONTAL;
|
||||
_gtk_orientable_set_style_classes (GTK_ORIENTABLE (self));
|
||||
|
||||
priv->inverted = FALSE;
|
||||
|
||||
gtk_widget_set_has_window (GTK_WIDGET (self), FALSE);
|
||||
|
||||
widget_node = gtk_widget_get_css_node (GTK_WIDGET (self));
|
||||
priv->trough_node = gtk_css_node_new ();
|
||||
gtk_css_node_set_name (priv->trough_node, I_("trough"));
|
||||
gtk_css_node_set_parent (priv->trough_node, widget_node);
|
||||
gtk_css_node_set_state (priv->trough_node, gtk_css_node_get_state (widget_node));
|
||||
g_signal_connect_object (priv->trough_node, "style-changed", G_CALLBACK (node_style_changed_cb), self, 0);
|
||||
g_object_unref (priv->trough_node);
|
||||
|
||||
priv->filled_node = gtk_css_node_new ();
|
||||
gtk_css_node_set_name (priv->filled_node, I_("block"));
|
||||
gtk_css_node_add_class (priv->filled_node, g_quark_from_static_string ("filled"));
|
||||
gtk_css_node_set_parent (priv->filled_node, priv->trough_node);
|
||||
gtk_css_node_set_state (priv->filled_node, gtk_css_node_get_state (widget_node));
|
||||
g_signal_connect_object (priv->filled_node, "style-changed", G_CALLBACK (node_style_changed_cb), self, 0);
|
||||
g_object_unref (priv->filled_node);
|
||||
|
||||
priv->empty_node = gtk_css_node_new ();
|
||||
gtk_css_node_set_name (priv->empty_node, I_("block"));
|
||||
gtk_css_node_add_class (priv->empty_node, g_quark_from_static_string ("empty"));
|
||||
gtk_css_node_set_parent (priv->empty_node, priv->trough_node);
|
||||
gtk_css_node_set_state (priv->empty_node, gtk_css_node_get_state (widget_node));
|
||||
g_signal_connect_object (priv->empty_node, "style-changed", G_CALLBACK (node_style_changed_cb), self, 0);
|
||||
g_object_unref (priv->empty_node);
|
||||
|
||||
gtk_level_bar_ensure_offset (self, GTK_LEVEL_BAR_OFFSET_LOW, 0.25);
|
||||
gtk_level_bar_ensure_offset (self, GTK_LEVEL_BAR_OFFSET_HIGH, 0.75);
|
||||
gtk_level_bar_update_level_style_classes (self);
|
||||
|
||||
self->priv->bar_mode = GTK_LEVEL_BAR_MODE_CONTINUOUS;
|
||||
priv->bar_mode = GTK_LEVEL_BAR_MODE_CONTINUOUS;
|
||||
gtk_level_bar_update_mode_style_classes (self);
|
||||
|
||||
/* set initial orientation and style classes */
|
||||
self->priv->orientation = GTK_ORIENTATION_HORIZONTAL;
|
||||
_gtk_orientable_set_style_classes (GTK_ORIENTABLE (self));
|
||||
|
||||
self->priv->inverted = FALSE;
|
||||
|
||||
gtk_widget_set_has_window (GTK_WIDGET (self), FALSE);
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
Loading…
Reference in New Issue
Block a user