Add AgChartRenderer class
It is a subclass of GdkCellRendererPixbuf specialised in displaying Astrognome chart previews.
This commit is contained in:
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7fe82cdc68
commit
13728943d6
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@ -40,6 +40,7 @@ PKG_CHECK_MODULES([GDA], [libgda-5.0 libgda-sqlite-5.0])
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PKG_CHECK_MODULES([PIXBUF], [gdk-pixbuf-2.0])
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PKG_CHECK_MODULES([RSVG], [librsvg-2.0])
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PKG_CHECK_MODULES([SWE_GLIB], [swe-glib >= 2.1.0])
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PKG_CHECK_MODULES([CAIRO], [cairo]);
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LIBGD_INIT([
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main-view
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@ -20,6 +20,7 @@ astrognome_source_files = \
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ag-preferences.c \
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ag-db.c \
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ag-display-theme.c \
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ag-chart-renderer.c \
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astrognome.c \
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$(NULL)
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@ -32,9 +33,9 @@ AM_CPPFLAGS = -DG_LOG_DOMAIN=\"Astrognome\" -DLOCALEDIR=\"$(localedir)\" -DPKGDA
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bin_PROGRAMS = astrognome
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astrognome_SOURCES = $(astrognome_source_files) $(BUILT_SOURCES)
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astrognome_LDADD = $(SWE_GLIB_LIBS) $(GTK_LIBS) $(LIBXML_LIBS) $(LIBXSLT_LIBS) $(WEBKIT_LIBS) $(GDA_LIBS) $(PIXBUF_LIBS) $(RSVG_LIBS) $(top_builddir)/libgd/libgd.la
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astrognome_LDADD = $(SWE_GLIB_LIBS) $(GTK_LIBS) $(LIBXML_LIBS) $(LIBXSLT_LIBS) $(WEBKIT_LIBS) $(GDA_LIBS) $(PIXBUF_LIBS) $(RSVG_LIBS) $(CAIRO_LIBS) $(top_builddir)/libgd/libgd.la
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astrognome_LDFLAGS = -rdynamic
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astrognome_CFLAGS = $(SWE_GLIB_CFLAGS) $(CFLAGS) $(GTK_CFLAGS) $(LIBXML_CFLAGS) $(LIBXSLT_CFLAGS) $(WEBKIT_CFLAGS) $(GDA_CFLAGS) $(PIXBUF_CFLAGS) $(RSVG_CFLAGS) -Wall
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astrognome_CFLAGS = $(SWE_GLIB_CFLAGS) $(CFLAGS) $(GTK_CFLAGS) $(LIBXML_CFLAGS) $(LIBXSLT_CFLAGS) $(WEBKIT_CFLAGS) $(GDA_CFLAGS) $(PIXBUF_CFLAGS) $(RSVG_CFLAGS) $(CAIRO_CFLAGS) -Wall
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# The following two lines generate a .dir-locals.el file, so
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# company-mode won’t die due to unknown includes
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@ -0,0 +1,305 @@
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#include <cairo.h>
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#include "ag-chart-renderer.h"
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typedef struct {
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gchar *css_class;
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gboolean checked;
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gboolean toggle_visible;
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} AgChartRendererPrivate;
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enum {
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PROP_0,
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AG_CHART_RENDERER_PROP_CSS_CLASS,
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AG_CHART_RENDERER_PROP_CHECKED,
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AG_CHART_RENDERER_PROP_TOGGLE_VISIBLE,
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};
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static void ag_chart_renderer_dispose(GObject *gobject);
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static void ag_chart_renderer_finalize(GObject *gobject);
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G_DEFINE_TYPE_WITH_PRIVATE(AgChartRenderer, ag_chart_renderer, GTK_TYPE_CELL_RENDERER_PIXBUF);
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static void
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ag_chart_renderer_render(GtkCellRenderer *renderer,
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cairo_t *cr,
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GtkWidget *widget,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags)
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{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(AG_CHART_RENDERER(renderer));
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int margin;
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GtkStyleContext *context = gtk_widget_get_style_context(widget);
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GdkPixbuf *pixbuf;
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gtk_style_context_save(context);
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gtk_style_context_add_class(context, "ag-chart-renderer");
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if (priv->css_class) {
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gtk_style_context_add_class(context, priv->css_class);
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}
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cairo_save(cr);
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gdk_cairo_rectangle(cr, cell_area);
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cairo_clip(cr);
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cairo_translate(cr, cell_area->x, cell_area->y);
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margin = MAX(AG_CHART_RENDERER_TILE_MARGIN, (int)((cell_area->width - AG_CHART_RENDERER_TILE_SIZE) / 2));
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g_object_get(renderer, "pixbuf", &pixbuf, NULL);
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if (pixbuf != NULL) {
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GdkRectangle area = {margin, margin, AG_CHART_RENDERER_TILE_SIZE, AG_CHART_RENDERER_TILE_SIZE};
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g_debug("Rendering chart with preview image");
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GTK_CELL_RENDERER_CLASS(ag_chart_renderer_parent_class)->render(renderer, cr, widget, &area, &area, flags);
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} else {
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g_debug("Rendering chart without preview image");
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gtk_render_frame(context, cr, margin, margin, AG_CHART_RENDERER_TILE_SIZE, AG_CHART_RENDERER_TILE_SIZE);
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gtk_render_background(context, cr, margin, margin, AG_CHART_RENDERER_TILE_SIZE, AG_CHART_RENDERER_TILE_SIZE);
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}
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gtk_style_context_restore(context);
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if (priv->toggle_visible) {
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gint xpad,
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ypad,
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x_offset,
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check_x,
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check_y;
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gtk_cell_renderer_get_padding(GTK_CELL_RENDERER(renderer), &xpad, &ypad);
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if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL) {
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x_offset = xpad;
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} else {
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x_offset = cell_area->width - AG_CHART_RENDERER_CHECK_ICON_SIZE - xpad;
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}
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check_x = x_offset;
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check_y = cell_area->height - AG_CHART_RENDERER_CHECK_ICON_SIZE - ypad;
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gtk_style_context_save(context);
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gtk_style_context_add_class(context, GTK_STYLE_CLASS_CHECK);
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if (priv->checked) {
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gtk_style_context_set_state(context, GTK_STATE_FLAG_CHECKED);
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}
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gtk_render_background(context, cr, check_x, check_y, AG_CHART_RENDERER_CHECK_ICON_SIZE, AG_CHART_RENDERER_CHECK_ICON_SIZE);
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gtk_render_frame(context, cr, check_x, check_y, AG_CHART_RENDERER_CHECK_ICON_SIZE, AG_CHART_RENDERER_CHECK_ICON_SIZE);
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gtk_render_check(context, cr, check_x, check_y, AG_CHART_RENDERER_CHECK_ICON_SIZE, AG_CHART_RENDERER_CHECK_ICON_SIZE);
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gtk_style_context_restore(context);
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}
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cairo_restore(cr);
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}
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void
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ag_chart_renderer_set_css_class(AgChartRenderer *chart_renderer, const gchar *css_class)
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{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(chart_renderer);
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g_free(priv->css_class);
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priv->css_class = g_strdup(css_class);
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}
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const gchar *
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ag_chart_renderer_get_css_class(AgChartRenderer *chart_renderer)
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{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(chart_renderer);
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return priv->css_class;
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}
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void
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ag_chart_renderer_set_checked(AgChartRenderer *chart_renderer, gboolean checked)
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{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(chart_renderer);
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priv->checked = checked;
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}
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gboolean
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ag_chart_renderer_get_checked(AgChartRenderer *chart_renderer)
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{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(chart_renderer);
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return priv->checked;
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}
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void
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ag_chart_renderer_set_toggle_visible(AgChartRenderer *chart_renderer, gboolean toggle_visible)
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{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(chart_renderer);
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priv->toggle_visible = toggle_visible;
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}
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gboolean
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ag_chart_renderer_get_toggle_visible(AgChartRenderer *chart_renderer)
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{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(chart_renderer);
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return priv->toggle_visible;
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}
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static void
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ag_chart_renderer_get_property(GObject *gobject,
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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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AgChartRenderer *chart_renderer = AG_CHART_RENDERER(gobject);
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switch (prop_id) {
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case AG_CHART_RENDERER_PROP_CSS_CLASS:
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g_value_set_string(value, ag_chart_renderer_get_css_class(chart_renderer));
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break;
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case AG_CHART_RENDERER_PROP_CHECKED:
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g_value_set_boolean(value, ag_chart_renderer_get_checked(chart_renderer));
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break;
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case AG_CHART_RENDERER_PROP_TOGGLE_VISIBLE:
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g_value_set_boolean(value, ag_chart_renderer_get_toggle_visible(chart_renderer));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, prop_id, pspec);
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break;
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}
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}
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static void
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ag_chart_renderer_set_property(GObject *gobject,
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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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AgChartRenderer *chart_renderer = AG_CHART_RENDERER(gobject);
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switch (prop_id) {
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case AG_CHART_RENDERER_PROP_CSS_CLASS:
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ag_chart_renderer_set_css_class(chart_renderer, g_value_get_string(value));
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break;
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case AG_CHART_RENDERER_PROP_CHECKED:
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ag_chart_renderer_set_checked(chart_renderer, g_value_get_boolean(value));
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break;
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case AG_CHART_RENDERER_PROP_TOGGLE_VISIBLE:
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ag_chart_renderer_set_toggle_visible(chart_renderer, g_value_get_boolean(value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, prop_id, pspec);
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break;
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}
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}
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static void
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ag_chart_renderer_class_init(AgChartRendererClass *klass)
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{
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GObjectClass *gobject_class = (GObjectClass *)klass;
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GtkCellRendererClass *cell_renderer_class = (GtkCellRendererClass *)klass;
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gobject_class->dispose = ag_chart_renderer_dispose;
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gobject_class->finalize = ag_chart_renderer_finalize;
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gobject_class->set_property = ag_chart_renderer_set_property;
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gobject_class->get_property = ag_chart_renderer_get_property;
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cell_renderer_class->render = ag_chart_renderer_render;
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g_object_class_install_property(
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G_OBJECT_CLASS(klass),
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AG_CHART_RENDERER_PROP_CSS_CLASS,
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g_param_spec_string(
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"css-class",
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"css-class",
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"CSS Class",
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NULL,
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G_PARAM_STATIC_NAME
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| G_PARAM_STATIC_NICK
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| G_PARAM_STATIC_BLURB
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| G_PARAM_READABLE
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| G_PARAM_WRITABLE
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)
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);
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g_object_class_install_property(
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G_OBJECT_CLASS(klass),
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AG_CHART_RENDERER_PROP_CHECKED,
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g_param_spec_boolean(
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"checked",
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"checked",
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"Checked",
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FALSE,
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G_PARAM_STATIC_NAME
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| G_PARAM_STATIC_NICK
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| G_PARAM_STATIC_BLURB
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| G_PARAM_READABLE
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| G_PARAM_WRITABLE
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)
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);
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g_object_class_install_property(
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G_OBJECT_CLASS(klass),
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AG_CHART_RENDERER_PROP_TOGGLE_VISIBLE,
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g_param_spec_boolean(
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"toggle-visible",
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"toggle-visible",
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"Toggle visible",
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FALSE,
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G_PARAM_STATIC_NAME
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| G_PARAM_STATIC_NICK
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| G_PARAM_STATIC_BLURB
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| G_PARAM_READABLE
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| G_PARAM_WRITABLE
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)
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);
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}
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static void
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ag_chart_renderer_init(AgChartRenderer *chart_renderer)
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{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(chart_renderer);
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priv->checked = FALSE;
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priv->toggle_visible = FALSE;
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}
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static void
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ag_chart_renderer_dispose(GObject *gobject)
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{
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G_OBJECT_CLASS(ag_chart_renderer_parent_class)->dispose(gobject);
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}
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static void
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ag_chart_renderer_finalize (GObject *gobject)
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{
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g_signal_handlers_destroy(gobject);
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G_OBJECT_CLASS(ag_chart_renderer_parent_class)->finalize(gobject);
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}
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AgChartRenderer *
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ag_chart_renderer_new(void)
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{
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AgChartRenderer *chart_renderer = NULL;
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chart_renderer = g_object_new(AG_TYPE_CHART_RENDERER, NULL);
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return chart_renderer;
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}
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@ -0,0 +1,58 @@
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#ifndef __AG_CHART_RENDERER_H__
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#define __AG_CHART_RENDERER_H__
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#include <gtk/gtk.h>
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G_BEGIN_DECLS
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#define AG_TYPE_CHART_RENDERER \
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(ag_chart_renderer_get_type())
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#define AG_CHART_RENDERER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), \
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AG_TYPE_CHART_RENDERER, \
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AgChartRenderer))
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#define AG_CHART_RENDERER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), \
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AG_TYPE_CHART_RENDERER, \
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AgChartRendererClass))
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#define IS_AG_CHART_RENDERER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
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AG_TYPE_CHART_RENDERER))
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#define IS_AG_CHART_RENDERER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), \
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AG_TYPE_CHART_RENDERER))
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#define AG_CHART_RENDERER_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), \
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AG_TYPE_CHART_RENDERER, \
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AgChartRendererClass))
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typedef struct _AgChartRenderer AgChartRenderer;
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typedef struct _AgChartRendererClass AgChartRendererClass;
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struct _AgChartRendererClass
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{
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GtkCellRendererPixbufClass parent_class;
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};
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struct _AgChartRenderer
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{
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GtkCellRendererPixbuf parent;
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};
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#define AG_CHART_RENDERER_TILE_SIZE 256
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#define AG_CHART_RENDERER_CHECK_ICON_SIZE 40
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#define AG_CHART_RENDERER_TILE_MARGIN AG_CHART_RENDERER_CHECK_ICON_SIZE / 4
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#define AG_CHART_RENDERER_TILE_MARGIN_BOTTOM AG_CHART_RENDERER_CHECK_ICON_SIZE / 8
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GType ag_chart_renderer_get_type (void) G_GNUC_CONST;
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AgChartRenderer *ag_chart_renderer_new(void);
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void ag_chart_renderer_set_toggle_visible(AgChartRenderer *chart_renderer, gboolean toggle_visible);
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gboolean ag_chart_renderer_get_toggle_visible(AgChartRenderer *chart_renderer);
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G_END_DECLS
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#endif /* __AG_CHART_RENDERER_H__ */
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