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Diffstat (limited to 'e-util/e-cell-renderer-color.c')
| -rw-r--r-- | e-util/e-cell-renderer-color.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/e-util/e-cell-renderer-color.c b/e-util/e-cell-renderer-color.c new file mode 100644 index 0000000000..4bbb1318b3 --- /dev/null +++ b/e-util/e-cell-renderer-color.c @@ -0,0 +1,243 @@ +/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ +/* e-cell-renderer-color.c + * + * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program 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 Lesser General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "e-cell-renderer-color.h" + +#include <string.h> +#include <glib/gi18n-lib.h> + +#define E_CELL_RENDERER_COLOR_GET_PRIVATE(obj) \ + (G_TYPE_INSTANCE_GET_PRIVATE \ + ((obj), E_TYPE_CELL_RENDERER_COLOR, ECellRendererColorPrivate)) + +enum { + PROP_0, + PROP_COLOR +}; + +struct _ECellRendererColorPrivate { + GdkColor *color; +}; + +G_DEFINE_TYPE ( + ECellRendererColor, + e_cell_renderer_color, + GTK_TYPE_CELL_RENDERER) + +static void +cell_renderer_color_get_size (GtkCellRenderer *cell, + GtkWidget *widget, + const GdkRectangle *cell_area, + gint *x_offset, + gint *y_offset, + gint *width, + gint *height) +{ + gint color_width = 16; + gint color_height = 16; + gint calc_width; + gint calc_height; + gfloat xalign; + gfloat yalign; + guint xpad; + guint ypad; + + g_object_get ( + cell, "xalign", &xalign, "yalign", &yalign, + "xpad", &xpad, "ypad", &ypad, NULL); + + calc_width = (gint) xpad * 2 + color_width; + calc_height = (gint) ypad * 2 + color_height; + + if (cell_area && color_width > 0 && color_height > 0) { + if (x_offset) { + *x_offset = (((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ? + (1.0 - xalign) : xalign) * + (cell_area->width - calc_width)); + *x_offset = MAX (*x_offset, 0); + } + + if (y_offset) { + *y_offset =(yalign * + (cell_area->height - calc_height)); + *y_offset = MAX (*y_offset, 0); + } + } else { + if (x_offset) *x_offset = 0; + if (y_offset) *y_offset = 0; + } + + if (width) + *width = calc_width; + + if (height) + *height = calc_height; +} + +static void +cell_renderer_color_render (GtkCellRenderer *cell, + cairo_t *cr, + GtkWidget *widget, + const GdkRectangle *background_area, + const GdkRectangle *cell_area, + GtkCellRendererState flags) +{ + ECellRendererColorPrivate *priv; + GdkRectangle pix_rect; + GdkRectangle draw_rect; + GdkRGBA rgba; + guint xpad; + guint ypad; + + priv = E_CELL_RENDERER_COLOR_GET_PRIVATE (cell); + + if (priv->color == NULL) + return; + + cell_renderer_color_get_size ( + cell, widget, cell_area, + &pix_rect.x, &pix_rect.y, + &pix_rect.width, &pix_rect.height); + + g_object_get (cell, "xpad", &xpad, "ypad", &ypad, NULL); + + pix_rect.x += cell_area->x + xpad; + pix_rect.y += cell_area->y + ypad; + pix_rect.width -= xpad * 2; + pix_rect.height -= ypad * 2; + + if (!gdk_rectangle_intersect (cell_area, &pix_rect, &draw_rect)) + return; + + rgba.red = priv->color->red / 65535.0; + rgba.green = priv->color->green / 65535.0; + rgba.blue = priv->color->blue / 65535.0; + rgba.alpha = 1.0; + + gdk_cairo_set_source_rgba (cr, &rgba); + cairo_rectangle (cr, pix_rect.x, pix_rect.y, draw_rect.width, draw_rect.height); + + cairo_fill (cr); +} + +static void +cell_renderer_color_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + ECellRendererColorPrivate *priv; + + priv = E_CELL_RENDERER_COLOR_GET_PRIVATE (object); + + switch (property_id) { + case PROP_COLOR: + if (priv->color != NULL) + gdk_color_free (priv->color); + priv->color = g_value_dup_boxed (value); + return; + } + + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); +} + +static void +cell_renderer_color_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + ECellRendererColorPrivate *priv; + + priv = E_CELL_RENDERER_COLOR_GET_PRIVATE (object); + + switch (property_id) { + case PROP_COLOR: + g_value_set_boxed (value, priv->color); + return; + } + + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); +} + +static void +cell_renderer_color_finalize (GObject *object) +{ + ECellRendererColorPrivate *priv; + + priv = E_CELL_RENDERER_COLOR_GET_PRIVATE (object); + + if (priv->color != NULL) + gdk_color_free (priv->color); + + /* Chain up to parent's finalize() method. */ + G_OBJECT_CLASS (e_cell_renderer_color_parent_class)->finalize (object); +} + +static void +e_cell_renderer_color_class_init (ECellRendererColorClass *class) +{ + GObjectClass *object_class; + GtkCellRendererClass *cell_class; + + g_type_class_add_private (class, sizeof (ECellRendererColorPrivate)); + + object_class = G_OBJECT_CLASS (class); + object_class->set_property = cell_renderer_color_set_property; + object_class->get_property = cell_renderer_color_get_property; + object_class->finalize = cell_renderer_color_finalize; + + cell_class = GTK_CELL_RENDERER_CLASS (class); + cell_class->get_size = cell_renderer_color_get_size; + cell_class->render = cell_renderer_color_render; + + g_object_class_install_property ( + object_class, + PROP_COLOR, + g_param_spec_boxed ( + "color", + "Color Info", + "The color to render", + GDK_TYPE_COLOR, + G_PARAM_READWRITE)); +} + +static void +e_cell_renderer_color_init (ECellRendererColor *cellcolor) +{ + cellcolor->priv = E_CELL_RENDERER_COLOR_GET_PRIVATE (cellcolor); + + g_object_set (cellcolor, "xpad", 4, NULL); +} + +/** + * e_cell_renderer_color_new: + * + * Since: 2.22 + **/ +GtkCellRenderer * +e_cell_renderer_color_new (void) +{ + return g_object_new (E_TYPE_CELL_RENDERER_COLOR, NULL); +} |