forked from AuroraMiddleware/gtk
169 lines
4.2 KiB
C
169 lines
4.2 KiB
C
#include "svgpaintable.h"
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#include <gtk/gtk.h>
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#include <librsvg/rsvg.h>
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struct _SvgPaintable
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{
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GObject parent_instance;
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GFile *file;
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RsvgHandle *handle;
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};
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struct _SvgPaintableClass
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{
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GObjectClass parent_class;
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};
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enum {
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PROP_FILE = 1,
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NUM_PROPERTIES
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};
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static void
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svg_paintable_snapshot (GdkPaintable *paintable,
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GdkSnapshot *snapshot,
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double width,
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double height)
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{
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SvgPaintable *self = SVG_PAINTABLE (paintable);
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cairo_t *cr;
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GError *error = NULL;
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cr = gtk_snapshot_append_cairo (GTK_SNAPSHOT (snapshot),
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&GRAPHENE_RECT_INIT (0, 0, width, height));
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if (!rsvg_handle_render_document (self->handle, cr,
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&(RsvgRectangle) {0, 0, width, height},
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&error))
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{
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g_error ("%s", error->message);
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}
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cairo_destroy (cr);
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}
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static int
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svg_paintable_get_intrinsic_width (GdkPaintable *paintable)
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{
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SvgPaintable *self = SVG_PAINTABLE (paintable);
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double width;
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if (!rsvg_handle_get_intrinsic_size_in_pixels (self->handle, &width, NULL))
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return 0;
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return ceil (width);
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}
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static int
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svg_paintable_get_intrinsic_height (GdkPaintable *paintable)
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{
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SvgPaintable *self = SVG_PAINTABLE (paintable);
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double height;
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if (!rsvg_handle_get_intrinsic_size_in_pixels (self->handle, NULL, &height))
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return 0;
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return ceil (height);
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}
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static void
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svg_paintable_init_interface (GdkPaintableInterface *iface)
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{
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iface->snapshot = svg_paintable_snapshot;
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iface->get_intrinsic_width = svg_paintable_get_intrinsic_width;
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iface->get_intrinsic_height = svg_paintable_get_intrinsic_height;
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}
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G_DEFINE_TYPE_WITH_CODE (SvgPaintable, svg_paintable, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
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svg_paintable_init_interface))
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static void
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svg_paintable_init (SvgPaintable *self)
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{
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}
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static void
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svg_paintable_dispose (GObject *object)
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{
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SvgPaintable *self = SVG_PAINTABLE (object);
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g_clear_object (&self->file);
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g_clear_object (&self->handle);
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G_OBJECT_CLASS (svg_paintable_parent_class)->dispose (object);
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}
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static void
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svg_paintable_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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SvgPaintable *self = SVG_PAINTABLE (object);
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switch (prop_id)
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{
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case PROP_FILE:
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{
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GFile *file = g_value_get_object (value);
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RsvgHandle *handle = rsvg_handle_new_from_gfile_sync (file,
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RSVG_HANDLE_FLAGS_NONE,
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NULL,
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NULL);
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rsvg_handle_set_dpi (handle, 90);
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g_set_object (&self->file, file);
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g_set_object (&self->handle, handle);
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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svg_paintable_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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SvgPaintable *self = SVG_PAINTABLE (object);
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switch (prop_id)
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{
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case PROP_FILE:
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g_value_set_object (value, self->file);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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svg_paintable_class_init (SvgPaintableClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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object_class->dispose = svg_paintable_dispose;
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object_class->set_property = svg_paintable_set_property;
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object_class->get_property = svg_paintable_get_property;
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g_object_class_install_property (object_class, PROP_FILE,
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g_param_spec_object ("file", "File", "File",
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G_TYPE_FILE,
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G_PARAM_READWRITE));
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}
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GdkPaintable *
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svg_paintable_new (GFile *file)
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{
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return g_object_new (SVG_TYPE_PAINTABLE,
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"file", file,
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NULL);
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}
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