Commit c6a78d76 authored by Benjamin Otte's avatar Benjamin Otte

gtk-demo: Add a CSS shadows demo

parent 0c16058b
......@@ -19,6 +19,7 @@ demos = \
css_basics.c \
css_multiplebgs.c \
css_pixbufs.c \
css_shadows.c \
dialog.c \
drawingarea.c \
editable_cells.c \
......@@ -120,6 +121,7 @@ RESOURCES= application.ui \
css_basics.css \
css_multiplebgs.css \
css_pixbufs.css \
css_shadows.css \
cssview.css \
fancy.css \
reset.css
......
/* CSS Theming/Shadows
*
* This demo shows how to use CSS shadows.
*/
#include <gtk/gtk.h>
static GtkWidget *window = NULL;
static void
show_parsing_error (GtkCssProvider *provider,
GtkCssSection *section,
const GError *error,
GtkTextBuffer *buffer)
{
GtkTextIter start, end;
const char *tag_name;
gtk_text_buffer_get_iter_at_line_index (buffer,
&start,
gtk_css_section_get_start_line (section),
gtk_css_section_get_start_position (section));
gtk_text_buffer_get_iter_at_line_index (buffer,
&end,
gtk_css_section_get_end_line (section),
gtk_css_section_get_end_position (section));
if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
tag_name = "warning";
else
tag_name = "error";
gtk_text_buffer_apply_tag_by_name (buffer, tag_name, &start, &end);
}
static void
css_text_changed (GtkTextBuffer *buffer,
GtkCssProvider *provider)
{
GtkTextIter start, end;
char *text;
gtk_text_buffer_get_start_iter (buffer, &start);
gtk_text_buffer_get_end_iter (buffer, &end);
gtk_text_buffer_remove_all_tags (buffer, &start, &end);
text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
gtk_css_provider_load_from_data (provider, text, -1, NULL);
g_free (text);
gtk_style_context_reset_widgets (gdk_screen_get_default ());
}
static void
apply_css (GtkWidget *widget, GtkStyleProvider *provider)
{
gtk_style_context_add_provider (gtk_widget_get_style_context (widget), provider, G_MAXUINT);
if (GTK_IS_CONTAINER (widget))
gtk_container_forall (GTK_CONTAINER (widget), (GtkCallback) apply_css, provider);
}
GtkWidget *
create_toolbar (void)
{
GtkWidget *toolbar;
GtkToolItem *item;
toolbar = gtk_toolbar_new ();
gtk_widget_set_valign (toolbar, GTK_ALIGN_CENTER);
item = gtk_tool_button_new_from_stock (GTK_STOCK_GO_FORWARD);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar), item, -1);
item = gtk_tool_button_new_from_stock (GTK_STOCK_GO_BACK);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar), item, -1);
item = gtk_tool_button_new (NULL, "Hello World");
gtk_tool_item_set_is_important (item, TRUE);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar), item, -1);
return toolbar;
}
GtkWidget *
do_css_shadows (GtkWidget *do_widget)
{
if (!window)
{
GtkWidget *paned, *container, *child;
GtkStyleProvider *provider;
GtkTextBuffer *text;
GBytes *bytes;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_transient_for (GTK_WINDOW (window), GTK_WINDOW (do_widget));
gtk_window_set_default_size (GTK_WINDOW (window), 400, 300);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
paned = gtk_paned_new (GTK_ORIENTATION_VERTICAL);
gtk_container_add (GTK_CONTAINER (window), paned);
child = create_toolbar ();
gtk_container_add (GTK_CONTAINER (paned), child);
text = gtk_text_buffer_new (NULL);
gtk_text_buffer_create_tag (text,
"warning",
"underline", PANGO_UNDERLINE_SINGLE,
NULL);
gtk_text_buffer_create_tag (text,
"error",
"underline", PANGO_UNDERLINE_ERROR,
NULL);
provider = GTK_STYLE_PROVIDER (gtk_css_provider_new ());
container = gtk_scrolled_window_new (NULL, NULL);
gtk_container_add (GTK_CONTAINER (paned), container);
child = gtk_text_view_new_with_buffer (text);
gtk_container_add (GTK_CONTAINER (container), child);
g_signal_connect (text,
"changed",
G_CALLBACK (css_text_changed),
provider);
bytes = g_resources_lookup_data ("/css_shadows/gtk.css", 0, NULL);
gtk_text_buffer_set_text (text, g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes));
g_signal_connect (provider,
"parsing-error",
G_CALLBACK (show_parsing_error),
gtk_text_view_get_buffer (GTK_TEXT_VIEW (child)));
apply_css (window, provider);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show_all (window);
else
{
gtk_widget_destroy (window);
window = NULL;
}
return window;
}
/* You can edit the text in this window to change the
* appearance of this Window.
* Be careful, if you screw it up, nothing might be visible
* anymore. :)
*/
/* This CSS resets all properties to their defaults values
* and overrides all user settings and the theme in use */
@import url("reset.css");
@import url("cssview.css");
/* Get a nice background for the window */
.background {
background-color: #4870bc;
background-image: linear-gradient(to left, transparent, rgba(255,255,255,.07) 50%, transparent 50%),
linear-gradient(to left, transparent, rgba(255,255,255,.13) 50%, transparent 50%),
linear-gradient(to left, transparent, transparent 50%, rgba(255,255,255,.17) 50%),
linear-gradient(to left, transparent, transparent 50%, rgba(255,255,255,.19) 50%);
background-size: 29px, 59px, 73px, 109px;
}
.button {
color: black;
padding: 10px;
border-radius: 5px;
transition: all 250ms ease-in;
border: 1px transparent solid;
}
.button:hover {
text-shadow: 3px 3px 5px alpha(black, 0.75);
icon-shadow: 3px 3px 5px alpha(black, 0.75);
box-shadow: 3px 3px 5px alpha(black, 0.5) inset;
border: solid 1px alpha(black, 0.75);
}
.button:active {
padding: 11px 9px 9px 11px;
text-shadow: 1px 1px 2.5px alpha(black, 0.6);
icon-shadow: 1px 1px 2.5px alpha(black, 0.6);
}
......@@ -39,4 +39,7 @@
<file>gnome-gsame.png</file>
<file>gnu-keys.png</file>
</gresource>
<gresource prefix="/css_shadows">
<file alias="gtk.css">css_shadows.css</file>
</gresource>
</gresources>
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