static void
gwy_graph_label_unrealize(GtkWidget *widget)
{
GwyGraphLabel *label;
label = GWY_GRAPH_LABEL(widget);
if (GTK_WIDGET_CLASS(gwy_graph_label_parent_class)->unrealize)
GTK_WIDGET_CLASS(gwy_graph_label_parent_class)->unrealize(widget);
}
static void
gwy_graph_label_size_request(GtkWidget *widget,
GtkRequisition *requisition)
{
GwyGraphLabel *label;
gwy_debug("");
label = GWY_GRAPH_LABEL(widget);
requisition->width = label->reqwidth;
requisition->height = label->reqheight;
}
static void
gwy_graph_label_finalize(GObject *object)
{
GwyGraphLabel *label;
label = GWY_GRAPH_LABEL(object);
gwy_signal_handler_disconnect(label->graph_model, label->model_notify_id);
gwy_signal_handler_disconnect(label->graph_model, label->curve_notify_id);
gwy_object_unref(label->graph_model);
pango_font_description_free(label->font_desc);
g_array_free(label->samplepos, TRUE);
G_OBJECT_CLASS(gwy_graph_label_parent_class)->finalize(object);
}
static void
gwy_graph_label_size_allocate(GtkWidget *widget,
GtkAllocation *allocation)
{
GwyGraphLabel *label;
gwy_debug("");
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED(widget)) {
label = GWY_GRAPH_LABEL(widget);
gdk_window_move_resize(widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
}
}
static gboolean
gwy_graph_label_expose(GtkWidget *widget,
GdkEventExpose *event)
{
GwyGraphLabel *label;
gwy_debug("");
if (event->count > 0)
return FALSE;
label = GWY_GRAPH_LABEL(widget);
gdk_window_clear_area(widget->window,
0, 0,
widget->allocation.width,
widget->allocation.height);
gwy_graph_label_draw_label(widget);
return FALSE;
}
static void
gwy_graph_label_realize(GtkWidget *widget)
{
GwyGraphLabel *label;
GdkWindowAttr attributes;
gint i, attributes_mask;
GtkStyle *style;
gwy_debug("realizing a GwyGraphLabel (%ux%u)",
widget->allocation.width, widget->allocation.height);
GTK_WIDGET_SET_FLAGS(widget, GTK_REALIZED);
label = GWY_GRAPH_LABEL(widget);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.event_mask = gtk_widget_get_events(widget)
| GDK_EXPOSURE_MASK;
attributes.visual = gtk_widget_get_visual(widget);
attributes.colormap = gtk_widget_get_colormap(widget);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new(gtk_widget_get_parent_window(widget),
&attributes, attributes_mask);
gdk_window_set_user_data(widget->window, widget);
widget->style = gtk_style_attach(widget->style, widget->window);
/* set background to white forever */
style = gtk_style_copy(widget->style);
for (i = 0; i < 5; i++) {
style->bg_gc[i] = widget->style->white_gc;
style->bg[i] = widget->style->white;
}
gtk_style_set_background(style, widget->window, GTK_STATE_NORMAL);
g_object_unref(style);
}
static void
gwy_graph_label_draw_label(GtkWidget *widget)
{
gint winheight, winwidth, windepth, winx, winy;
GwyGraphLabel *label;
PangoLayout *layout;
GdkGC *mygc;
mygc = gdk_gc_new(widget->window);
label = GWY_GRAPH_LABEL(widget);
layout = gtk_widget_create_pango_layout(widget, NULL);
gdk_window_get_geometry(widget->window,
&winx, &winy, &winwidth, &winheight, &windepth);
gwy_graph_label_draw_on_drawable(label, GDK_DRAWABLE(widget->window),
mygc, layout,
0, 0, winwidth, winheight);
g_object_unref(mygc);
g_object_unref(layout);
}
GdkPixbuf*
gwy_graph_export_pixmap(GwyGraph *graph,
G_GNUC_UNUSED gboolean export_title,
G_GNUC_UNUSED gboolean export_axis,
G_GNUC_UNUSED gboolean export_labels)
{
GdkColor color = { 0, 65535, 65535, 65535 };
GdkPixbuf *pixbuf;
GdkColormap *cmap;
GdkGC *gc;
GdkVisual *visual;
GdkPixmap *pixmap;
PangoLayout *layout;
PangoContext *context;
gint width, height, topheight, bottomheight, rightwidth, leftwidth;
gint labelx, labely, labelw, labelh;
width = (GTK_WIDGET(graph))->allocation.width;
height = (GTK_WIDGET(graph))->allocation.height;
topheight = (GTK_WIDGET(graph->axis[GTK_POS_TOP]))->allocation.height;
bottomheight = (GTK_WIDGET(graph->axis[GTK_POS_BOTTOM]))->allocation.height;
leftwidth = (GTK_WIDGET(graph->axis[GTK_POS_LEFT]))->allocation.width;
rightwidth = (GTK_WIDGET(graph->axis[GTK_POS_RIGHT]))->allocation.width;
labelx = (GTK_WIDGET(graph->area->lab))->allocation.x + leftwidth;
labely = (GTK_WIDGET(graph->area->lab))->allocation.y + topheight;
labelw = (GWY_GRAPH_LABEL(graph->area->lab))->reqwidth;
labelh = (GWY_GRAPH_LABEL(graph->area->lab))->reqheight;
visual = gdk_visual_get_best();
cmap = gdk_colormap_new(visual, FALSE);
pixmap = gdk_pixmap_new(NULL, width, height, visual->depth);
gdk_drawable_set_colormap(pixmap, cmap);
gc = gdk_gc_new(pixmap);
gdk_gc_set_colormap(gc, cmap);
gdk_gc_set_rgb_fg_color(gc, &color);
gdk_draw_rectangle(pixmap, gc, TRUE, 0, 0, width, height);
gwy_graph_area_draw_on_drawable(graph->area, pixmap, gc,
leftwidth, topheight,
width - leftwidth - rightwidth,
height - topheight - bottomheight);
/* Draw axes */
gwy_axis_draw_on_drawable(graph->axis[GTK_POS_TOP], pixmap, gc,
leftwidth, 0,
width - leftwidth - rightwidth, topheight);
gwy_axis_draw_on_drawable(graph->axis[GTK_POS_BOTTOM], pixmap, gc,
leftwidth, height - bottomheight,
width - leftwidth - rightwidth, bottomheight);
gwy_axis_draw_on_drawable(graph->axis[GTK_POS_LEFT], pixmap, gc,
0, topheight,
leftwidth, height - topheight - bottomheight);
gwy_axis_draw_on_drawable(graph->axis[GTK_POS_RIGHT], pixmap, gc,
width - rightwidth, topheight,
rightwidth, height - topheight - bottomheight);
context = gdk_pango_context_get_for_screen(gdk_screen_get_default());
pango_context_set_font_description(context, graph->area->lab->font_desc);
layout = pango_layout_new(context);
gwy_graph_label_draw_on_drawable(graph->area->lab, pixmap, gc, layout,
labelx, labely, labelw, labelh);
pixbuf = gdk_pixbuf_get_from_drawable(NULL, pixmap, cmap,
0, 0, 0, 0,
-1, -1);
g_object_unref(pixmap);
g_object_unref(layout);
g_object_unref(context);
g_object_unref(gc);
g_object_unref(cmap);
return pixbuf;
}