/* gtkcellrendererpixbuf.c * Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include #include "gtkcellrendererpixbuf.h" #include "gtkintl.h" static void gtk_cell_renderer_pixbuf_get_property (GObject *object, guint param_id, GValue *value, GParamSpec *pspec); static void gtk_cell_renderer_pixbuf_set_property (GObject *object, guint param_id, const GValue *value, GParamSpec *pspec); static void gtk_cell_renderer_pixbuf_init (GtkCellRendererPixbuf *celltext); static void gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class); static void gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell, GtkWidget *widget, GdkRectangle *rectangle, gint *x_offset, gint *y_offset, gint *width, gint *height); static void gtk_cell_renderer_pixbuf_render (GtkCellRenderer *cell, GdkWindow *window, GtkWidget *widget, GdkRectangle *background_area, GdkRectangle *cell_area, GdkRectangle *expose_area, guint flags); enum { PROP_ZERO, PROP_PIXBUF }; GtkType gtk_cell_renderer_pixbuf_get_type (void) { static GtkType cell_pixbuf_type = 0; if (!cell_pixbuf_type) { static const GTypeInfo cell_pixbuf_info = { sizeof (GtkCellRendererPixbufClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gtk_cell_renderer_pixbuf_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkCellRendererPixbuf), 0, /* n_preallocs */ (GInstanceInitFunc) gtk_cell_renderer_pixbuf_init, }; cell_pixbuf_type = g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererPixbuf", &cell_pixbuf_info, 0); } return cell_pixbuf_type; } static void gtk_cell_renderer_pixbuf_init (GtkCellRendererPixbuf *cellpixbuf) { } static void gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class); object_class->get_property = gtk_cell_renderer_pixbuf_get_property; object_class->set_property = gtk_cell_renderer_pixbuf_set_property; cell_class->get_size = gtk_cell_renderer_pixbuf_get_size; cell_class->render = gtk_cell_renderer_pixbuf_render; g_object_class_install_property (object_class, PROP_PIXBUF, g_param_spec_object ("pixbuf", _("Pixbuf Object"), _("The pixbuf to render."), GDK_TYPE_PIXBUF, G_PARAM_READABLE | G_PARAM_WRITABLE)); } static void gtk_cell_renderer_pixbuf_get_property (GObject *object, guint param_id, GValue *value, GParamSpec *pspec) { GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object); switch (param_id) { case PROP_PIXBUF: g_value_set_object (value, cellpixbuf->pixbuf ? G_OBJECT (cellpixbuf->pixbuf) : NULL); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec); break; } } static void gtk_cell_renderer_pixbuf_set_property (GObject *object, guint param_id, const GValue *value, GParamSpec *pspec) { GdkPixbuf *pixbuf; GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object); switch (param_id) { case PROP_PIXBUF: pixbuf = (GdkPixbuf*) g_value_get_object (value); if (pixbuf) g_object_ref (G_OBJECT (pixbuf)); if (cellpixbuf->pixbuf) g_object_unref (G_OBJECT (cellpixbuf->pixbuf)); cellpixbuf->pixbuf = pixbuf; g_object_notify (object, "pixbuf"); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec); break; } } /** * gtk_cell_renderer_pixbuf_new: * * Creates a new #GtkCellRendererPixbuf. Adjust rendering * parameters using object properties. Object properties can be set * globally (with g_object_set()). Also, with #GtkTreeViewColumn, you * can bind a property to a value in a #GtkTreeModel. For example, you * can bind the "pixbuf" property on the cell renderer to a pixbuf value * in the model, thus rendering a different image in each row of the * #GtkTreeView. * * Return value: the new cell renderer **/ GtkCellRenderer * gtk_cell_renderer_pixbuf_new (void) { return GTK_CELL_RENDERER (gtk_type_new (gtk_cell_renderer_pixbuf_get_type ())); } static void gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell, GtkWidget *widget, GdkRectangle *cell_area, gint *x_offset, gint *y_offset, gint *width, gint *height) { GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell; GdkPixbuf *pixbuf; gint calc_width; gint calc_height; pixbuf = cellpixbuf->pixbuf; calc_width = (gint) GTK_CELL_RENDERER (cellpixbuf)->xpad * 2 + (cellpixbuf->pixbuf ? gdk_pixbuf_get_width (cellpixbuf->pixbuf) : 0); calc_height = (gint) GTK_CELL_RENDERER (cellpixbuf)->ypad * 2 + (cellpixbuf->pixbuf ? gdk_pixbuf_get_height (cellpixbuf->pixbuf) : 0); if (x_offset) *x_offset = 0; if (y_offset) *y_offset = 0; if (cell_area && pixbuf) { if (x_offset) { *x_offset = GTK_CELL_RENDERER (cellpixbuf)->xalign * (cell_area->width - calc_width - (2 * GTK_CELL_RENDERER (cellpixbuf)->xpad)); *x_offset = MAX (*x_offset, 0) + GTK_CELL_RENDERER (cellpixbuf)->xpad; } if (y_offset) { *y_offset = GTK_CELL_RENDERER (cellpixbuf)->yalign * (cell_area->height - calc_height - (2 * GTK_CELL_RENDERER (cellpixbuf)->ypad)); *y_offset = MAX (*y_offset, 0) + GTK_CELL_RENDERER (cellpixbuf)->ypad; } } if (calc_width) *width = calc_width; if (height) *height = calc_height; } static void gtk_cell_renderer_pixbuf_render (GtkCellRenderer *cell, GdkWindow *window, GtkWidget *widget, GdkRectangle *background_area, GdkRectangle *cell_area, GdkRectangle *expose_area, guint flags) { GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell; GdkPixbuf *pixbuf; guchar *pixels; gint rowstride; GdkRectangle pix_rect; GdkRectangle draw_rect; pixbuf = cellpixbuf->pixbuf; if (!pixbuf) return; rowstride = gdk_pixbuf_get_rowstride (pixbuf); pixels = gdk_pixbuf_get_pixels (pixbuf); gtk_cell_renderer_pixbuf_get_size (cell, widget, cell_area, &pix_rect.x, &pix_rect.x, &pix_rect.width, &pix_rect.height); pix_rect.x += cell_area->x; pix_rect.y += cell_area->y; if (gdk_rectangle_intersect (cell_area, &pix_rect, &draw_rect)) gdk_pixbuf_render_to_drawable_alpha (pixbuf, window, /* pixbuf 0, 0 is at pix_rect.x, pix_rect.y */ draw_rect.x - pix_rect.x, draw_rect.y - pix_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height, GDK_PIXBUF_ALPHA_FULL, 0, GDK_RGB_DITHER_NORMAL, 0, 0); }