astrognome/src/ag-chart-renderer.c

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#include <cairo.h>
#include "ag-chart-renderer.h"
typedef struct {
gchar *css_class;
gboolean checked;
gboolean toggle_visible;
} AgChartRendererPrivate;
enum {
PROP_0,
AG_CHART_RENDERER_PROP_CSS_CLASS,
AG_CHART_RENDERER_PROP_CHECKED,
AG_CHART_RENDERER_PROP_TOGGLE_VISIBLE,
};
static void ag_chart_renderer_dispose(GObject *gobject);
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
);
static void
ag_chart_renderer_render(GtkCellRenderer *renderer,
cairo_t *cr,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(
AG_CHART_RENDERER(renderer)
);
int margin;
GtkStyleContext *context = gtk_widget_get_style_context(widget);
GdkPixbuf *pixbuf;
gtk_style_context_save(context);
gtk_style_context_add_class(context, "ag-chart-renderer");
if (priv->css_class) {
gtk_style_context_add_class(context, priv->css_class);
}
cairo_save(cr);
gdk_cairo_rectangle(cr, cell_area);
cairo_clip(cr);
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)
);
g_object_get(renderer, "pixbuf", &pixbuf, NULL);
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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GTK_CELL_RENDERER_CLASS(ag_chart_renderer_parent_class)->render(
renderer,
cr,
widget,
&area,
&area,
flags
);
} else {
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gtk_render_frame(
context,
cr,
margin,
margin,
AG_CHART_RENDERER_TILE_SIZE,
AG_CHART_RENDERER_TILE_SIZE
);
gtk_render_background(
context,
cr,
margin,
margin,
AG_CHART_RENDERER_TILE_SIZE,
AG_CHART_RENDERER_TILE_SIZE
);
}
gtk_style_context_restore(context);
if (priv->toggle_visible) {
gint xpad,
ypad,
x_offset,
check_x,
check_y;
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gtk_cell_renderer_get_padding(
GTK_CELL_RENDERER(renderer),
&xpad, &ypad
);
if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL) {
x_offset = xpad;
} else {
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x_offset = cell_area->width
- AG_CHART_RENDERER_CHECK_ICON_SIZE
- xpad;
}
check_x = x_offset;
check_y = cell_area->height - AG_CHART_RENDERER_CHECK_ICON_SIZE - ypad;
gtk_style_context_save(context);
gtk_style_context_add_class(context, GTK_STYLE_CLASS_CHECK);
if (priv->checked) {
gtk_style_context_set_state(context, GTK_STATE_FLAG_CHECKED);
}
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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
);
gtk_render_frame(
context,
cr,
check_x,
check_y,
AG_CHART_RENDERER_CHECK_ICON_SIZE,
AG_CHART_RENDERER_CHECK_ICON_SIZE
);
gtk_render_check(
context,
cr,
check_x,
check_y,
AG_CHART_RENDERER_CHECK_ICON_SIZE,
AG_CHART_RENDERER_CHECK_ICON_SIZE
);
gtk_style_context_restore(context);
}
cairo_restore(cr);
}
void
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ag_chart_renderer_set_css_class(AgChartRenderer *chart_renderer,
const gchar *css_class)
{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(
chart_renderer
);
g_free(priv->css_class);
priv->css_class = g_strdup(css_class);
}
const gchar *
ag_chart_renderer_get_css_class(AgChartRenderer *chart_renderer)
{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(
chart_renderer
);
return priv->css_class;
}
void
ag_chart_renderer_set_checked(AgChartRenderer *chart_renderer, gboolean checked)
{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(
chart_renderer
);
priv->checked = checked;
}
gboolean
ag_chart_renderer_get_checked(AgChartRenderer *chart_renderer)
{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(
chart_renderer
);
return priv->checked;
}
void
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ag_chart_renderer_set_toggle_visible(AgChartRenderer *chart_renderer,
gboolean toggle_visible)
{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(
chart_renderer
);
priv->toggle_visible = toggle_visible;
}
gboolean
ag_chart_renderer_get_toggle_visible(AgChartRenderer *chart_renderer)
{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(
chart_renderer
);
return priv->toggle_visible;
}
static void
ag_chart_renderer_get_property(GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
AgChartRenderer *chart_renderer = AG_CHART_RENDERER(gobject);
switch (prop_id) {
case AG_CHART_RENDERER_PROP_CSS_CLASS:
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g_value_set_string(
value,
ag_chart_renderer_get_css_class(chart_renderer)
);
break;
case AG_CHART_RENDERER_PROP_CHECKED:
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g_value_set_boolean(
value,
ag_chart_renderer_get_checked(chart_renderer)
);
break;
case AG_CHART_RENDERER_PROP_TOGGLE_VISIBLE:
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g_value_set_boolean(
value,
ag_chart_renderer_get_toggle_visible(chart_renderer)
);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, prop_id, pspec);
break;
}
}
static void
ag_chart_renderer_set_property(GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
AgChartRenderer *chart_renderer = AG_CHART_RENDERER(gobject);
switch (prop_id) {
case AG_CHART_RENDERER_PROP_CSS_CLASS:
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ag_chart_renderer_set_css_class(
chart_renderer,
g_value_get_string(value)
);
break;
case AG_CHART_RENDERER_PROP_CHECKED:
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ag_chart_renderer_set_checked(
chart_renderer,
g_value_get_boolean(value)
);
break;
case AG_CHART_RENDERER_PROP_TOGGLE_VISIBLE:
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ag_chart_renderer_set_toggle_visible(
chart_renderer,
g_value_get_boolean(value)
);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, prop_id, pspec);
break;
}
}
static void
ag_chart_renderer_class_init(AgChartRendererClass *klass)
{
GObjectClass *gobject_class = (GObjectClass *)klass;
GtkCellRendererClass *cell_renderer_class = (GtkCellRendererClass *)klass;
gobject_class->dispose = ag_chart_renderer_dispose;
gobject_class->finalize = ag_chart_renderer_finalize;
gobject_class->set_property = ag_chart_renderer_set_property;
gobject_class->get_property = ag_chart_renderer_get_property;
cell_renderer_class->render = ag_chart_renderer_render;
g_object_class_install_property(
G_OBJECT_CLASS(klass),
AG_CHART_RENDERER_PROP_CSS_CLASS,
g_param_spec_string(
"css-class",
"css-class",
"CSS Class",
NULL,
G_PARAM_STATIC_NAME
| G_PARAM_STATIC_NICK
| G_PARAM_STATIC_BLURB
| G_PARAM_READABLE
| G_PARAM_WRITABLE
)
);
g_object_class_install_property(
G_OBJECT_CLASS(klass),
AG_CHART_RENDERER_PROP_CHECKED,
g_param_spec_boolean(
"checked",
"checked",
"Checked",
FALSE,
G_PARAM_STATIC_NAME
| G_PARAM_STATIC_NICK
| G_PARAM_STATIC_BLURB
| G_PARAM_READABLE
| G_PARAM_WRITABLE
)
);
g_object_class_install_property(
G_OBJECT_CLASS(klass),
AG_CHART_RENDERER_PROP_TOGGLE_VISIBLE,
g_param_spec_boolean(
"toggle-visible",
"toggle-visible",
"Toggle visible",
FALSE,
G_PARAM_STATIC_NAME
| G_PARAM_STATIC_NICK
| G_PARAM_STATIC_BLURB
| G_PARAM_READABLE
| G_PARAM_WRITABLE
)
);
}
static void
ag_chart_renderer_init(AgChartRenderer *chart_renderer)
{
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AgChartRendererPrivate *priv = ag_chart_renderer_get_instance_private(
chart_renderer
);
priv->checked = FALSE;
priv->toggle_visible = FALSE;
}
static void
ag_chart_renderer_dispose(GObject *gobject)
{
G_OBJECT_CLASS(ag_chart_renderer_parent_class)->dispose(gobject);
}
static void
ag_chart_renderer_finalize (GObject *gobject)
{
g_signal_handlers_destroy(gobject);
G_OBJECT_CLASS(ag_chart_renderer_parent_class)->finalize(gobject);
}
AgChartRenderer *
ag_chart_renderer_new(void)
{
AgChartRenderer *chart_renderer = NULL;
chart_renderer = g_object_new(AG_TYPE_CHART_RENDERER, NULL);
return chart_renderer;
}