+++ /dev/null
-/*
- * font-sample.c
- * Copyright (C) 2009 Jim Evins <evins@snaught.com>.
- *
- * This file is part of gLabels.
- *
- * gLabels is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * gLabels is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with gLabels. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <config.h>
-
-#include "font-sample.h"
-
-#include "marshal.h"
-#include "color.h"
-
-
-/*===========================================*/
-/* Private macros and constants. */
-/*===========================================*/
-
-#define MARGIN 2
-
-
-/*===========================================*/
-/* Private types */
-/*===========================================*/
-
-struct _glFontSamplePrivate {
-
- gchar *sample_text;
-
- gchar *font_family;
-};
-
-
-/*===========================================*/
-/* Private globals */
-/*===========================================*/
-
-
-/*===========================================*/
-/* Local function prototypes */
-/*===========================================*/
-
-static void gl_font_sample_finalize (GObject *object);
-
-static void style_set_cb (GtkWidget *widget,
- GtkStyle *previous_style);
-
-static void redraw (glFontSample *this);
-
-static gboolean expose_event_cb (GtkWidget *widget,
- GdkEventExpose *event);
-
-static void draw_sample (glFontSample *this,
- cairo_t *cr);
-
-
-
-/****************************************************************************/
-/* Boilerplate Object stuff. */
-/****************************************************************************/
-G_DEFINE_TYPE (glFontSample, gl_font_sample, GTK_TYPE_DRAWING_AREA);
-
-
-/*****************************************************************************/
-/* Class Init Function. */
-/*****************************************************************************/
-static void
-gl_font_sample_class_init (glFontSampleClass *class)
-{
- GObjectClass *gobject_class = G_OBJECT_CLASS (class);
- GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
-
- gl_font_sample_parent_class = g_type_class_peek_parent (class);
-
- gobject_class->finalize = gl_font_sample_finalize;
-
- widget_class->expose_event = expose_event_cb;
- widget_class->style_set = style_set_cb;
-}
-
-
-/*****************************************************************************/
-/* Object Instance Init Function. */
-/*****************************************************************************/
-static void
-gl_font_sample_init (glFontSample *this)
-{
- GTK_WIDGET_SET_FLAGS (GTK_WIDGET (this), GTK_NO_WINDOW);
-
- this->priv = g_new0 (glFontSamplePrivate, 1);
-}
-
-
-/*****************************************************************************/
-/* Finalize Method. */
-/*****************************************************************************/
-static void
-gl_font_sample_finalize (GObject *object)
-{
- glFontSample *this = GL_FONT_SAMPLE (object);
-
- g_return_if_fail (object != NULL);
- g_return_if_fail (GL_IS_FONT_SAMPLE (object));
-
- g_free (this->priv->sample_text);
- g_free (this->priv->font_family);
- g_free (this->priv);
-
- G_OBJECT_CLASS (gl_font_sample_parent_class)->finalize (object);
-}
-
-
-/*****************************************************************************/
-/** New Object Generator. */
-/*****************************************************************************/
-GtkWidget *
-gl_font_sample_new (gint w,
- gint h,
- const gchar *sample_text,
- const gchar *font_family)
-{
- glFontSample *this;
-
- this = g_object_new (GL_TYPE_FONT_SAMPLE, NULL);
-
- this->priv->sample_text = g_strdup (sample_text);
- this->priv->font_family = g_strdup (font_family);
-
- gtk_widget_set_size_request (GTK_WIDGET (this), w, h);
-
- return GTK_WIDGET (this);
-}
-
-
-/*--------------------------------------------------------------------------*/
-/* Style set handler (updates colors when style/theme changes). */
-/*--------------------------------------------------------------------------*/
-static void
-style_set_cb (GtkWidget *widget,
- GtkStyle *previous_style)
-{
- redraw (GL_FONT_SAMPLE (widget));
-}
-
-
-/*****************************************************************************/
-/* Request redraw. */
-/*****************************************************************************/
-static void
-redraw (glFontSample *this)
-{
- GdkRegion *region;
-
- if (GTK_WIDGET_REALIZED (GTK_WIDGET (this)))
- {
- /* redraw the cairo canvas forcing an expose event */
- region = gdk_drawable_get_clip_region (GTK_WIDGET (this)->window);
- gdk_window_invalidate_region (GTK_WIDGET (this)->window, region, TRUE);
- gdk_region_destroy (region);
- }
-}
-
-
-/*****************************************************************************/
-/* "Expose event" callback. */
-/*****************************************************************************/
-static gboolean
-expose_event_cb (GtkWidget *widget,
- GdkEventExpose *event)
-{
- cairo_t *cr;
-
- cr = gdk_cairo_create (widget->window);
-
- cairo_rectangle (cr,
- event->area.x, event->area.y,
- event->area.width, event->area.height);
- cairo_clip (cr);
-
- cairo_translate (cr, widget->allocation.x, widget->allocation.y);
-
- draw_sample (GL_FONT_SAMPLE (widget), cr);
-
- cairo_destroy (cr);
-
- return FALSE;
-}
-
-
-/*****************************************************************************/
-/* Draw sample. */
-/*****************************************************************************/
-static void
-draw_sample (glFontSample *this,
- cairo_t *cr)
-{
- GtkStyle *style;
- gdouble w, h;
- guint fill_color, line_color;
- PangoLayout *layout;
- PangoFontDescription *desc;
- PangoRectangle ink_rect, logical_rect;
- gdouble layout_x, layout_y, layout_width, layout_height;
-
-
-
- w = GTK_WIDGET (this)->allocation.width;
- h = GTK_WIDGET (this)->allocation.height;
-
-
- style = gtk_widget_get_style (GTK_WIDGET (this));
- if ( GTK_WIDGET_IS_SENSITIVE (GTK_WIDGET (this)) )
- {
- fill_color = gl_color_from_gdk_color (&style->light[GTK_STATE_NORMAL]);
- line_color = gl_color_from_gdk_color (&style->fg[GTK_STATE_NORMAL]);
- }
- else
- {
- fill_color = GL_COLOR_NONE;
- line_color = gl_color_from_gdk_color (&style->fg[GTK_STATE_INSENSITIVE]);
- }
-
-
- cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
-
- cairo_rectangle( cr, 0, 0, w-1, h-1 );
-
- cairo_set_source_rgba (cr, GL_COLOR_RGBA_ARGS (fill_color));
- cairo_fill_preserve( cr );
-
- cairo_set_source_rgb (cr, GL_COLOR_RGB_ARGS (line_color));
- cairo_set_line_width (cr, 1.0);
- cairo_stroke (cr);
-
-
- cairo_set_antialias (cr, CAIRO_ANTIALIAS_DEFAULT);
-
-
- layout = pango_cairo_create_layout (cr);
-
- desc = pango_font_description_new ();
- pango_font_description_set_family (desc, this->priv->font_family);
- pango_font_description_set_weight (desc, PANGO_WEIGHT_NORMAL);
- pango_font_description_set_style (desc, PANGO_STYLE_NORMAL);
- pango_font_description_set_size (desc, 0.6 * h * PANGO_SCALE);
-
- pango_layout_set_font_description (layout, desc);
- pango_font_description_free (desc);
-
- pango_layout_set_text (layout, this->priv->sample_text, -1);
- pango_layout_set_width (layout, -1);
- pango_layout_get_pixel_extents (layout, &ink_rect, &logical_rect);
- layout_width = MAX (logical_rect.width, ink_rect.width);
- layout_height = MAX (logical_rect.height, ink_rect.height);
-
- layout_x = (w - layout_width) / 2.0;
- layout_y = (h - layout_height) / 2.0;
-
- if (ink_rect.x < logical_rect.x)
- {
- layout_x += logical_rect.x - ink_rect.x;
- }
-
- if (ink_rect.y < logical_rect.y)
- {
- layout_y += logical_rect.y - ink_rect.y;
- }
-
- cairo_set_source_rgba (cr, GL_COLOR_RGBA_ARGS (line_color));
- cairo_move_to (cr, layout_x, layout_y);
- pango_cairo_show_layout (cr, layout);
-
- g_object_unref (layout);
-}
-
-
-
-/*
- * Local Variables: -- emacs
- * mode: C -- emacs
- * c-basic-offset: 8 -- emacs
- * tab-width: 8 -- emacs
- * indent-tabs-mode: nil -- emacs
- * End: -- emacs
- */
projects / glabels / blobdiff