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/*
* GPL 2
*/
#include <gtk/gtk.h>
#include "preset_renderer.h"
G_DEFINE_TYPE (CFmPresetRenderer, cfm_preset_renderer, GTK_TYPE_CELL_RENDERER);
#define ABS_RANGE_LOW 60000000
#define ABS_RANGE_HIGH 140000000
enum {
PROP_0,
PROP_FREQUENCY,
PROP_NAME,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static void cfm_preset_renderer_get_size_internal(GtkCellRenderer *cell,
GtkWidget *widget, GdkRectangle *cell_area, PangoLayout *layout,
gint *x_offset, gint *y_offset, gint *width, gint *height)
{
CFmPresetRenderer *self = CFM_PRESET_RENDERER(cell);
PangoRectangle rect;
gint min_width, min_height;
if (layout) {
g_object_ref(layout);
} else {
layout = gtk_widget_create_pango_layout(widget, NULL);
}
pango_layout_set_text(layout, self->freq_text, -1);
pango_layout_get_pixel_extents(layout, NULL, &rect);
min_height = cell->ypad * 2 + rect.height;
min_width = cell->xpad * 2 + rect.width;
if (self->name && self->name[0] != '\0') {
pango_layout_set_text(layout, self->name, -1);
pango_layout_get_pixel_extents(layout, NULL, &rect);
min_height = MAX(min_height, cell->ypad * 2 + rect.height);
min_width += rect.width;
}
if (cell_area) {
if (x_offset) *x_offset = 0; /* This renderer always expands horiz. */
if (y_offset) {
*y_offset = cell->yalign * (cell_area->height - min_height);
}
} else {
if (x_offset) *x_offset = 0;
if (y_offset) *y_offset = 0;
}
if (width) *width = min_width;
if (height) *height = min_height;
g_object_unref(layout);
}
static void cfm_preset_renderer_get_size(GtkCellRenderer *cell,
GtkWidget *widget, GdkRectangle *cell_area, gint *x_offset, gint *y_offset,
gint *width, gint *height)
{
PangoLayout *layout = gtk_widget_create_pango_layout(widget, NULL);
cfm_preset_renderer_get_size_internal(cell, widget, cell_area, layout,
x_offset, y_offset, width, height);
g_object_unref(layout);
}
static void cfm_preset_renderer_render(GtkCellRenderer *cell, GdkWindow *window,
GtkWidget *widget, GdkRectangle *background_area, GdkRectangle *cell_area,
GdkRectangle *expose_area, GtkCellRendererState flags)
{
CFmPresetRenderer *self = CFM_PRESET_RENDERER(cell);
PangoLayout *layout = gtk_widget_create_pango_layout(widget, NULL);
gint avail_width = cell_area->width - (2*cell->xpad);
gint x_offset, y_offset, x, y;
cfm_preset_renderer_get_size_internal(cell, widget, cell_area, layout,
&x_offset, &y_offset, NULL, NULL);
x = cell_area->x + x_offset + cell->xpad;
y = cell_area->y + y_offset + cell->ypad;
pango_layout_set_text(layout, self->freq_text, -1);
gtk_paint_layout(widget->style, window, GTK_STATE_NORMAL, TRUE, expose_area,
widget, "cellrenderertext", x, y, layout);
if (self->name && self->name[0] != '\0') {
pango_layout_set_text(layout, self->name, -1);
x += avail_width / 2;
gtk_paint_layout(widget->style, window, GTK_STATE_NORMAL, TRUE,
expose_area, widget, "cellrenderertext", x, y, layout);
}
g_object_unref(layout);
}
static void cfm_preset_renderer_init(CFmPresetRenderer *self)
{
}
static void cfm_preset_renderer_set_property(GObject *object, guint property_id,
const GValue *value, GParamSpec *pspec)
{
CFmPresetRenderer *self = CFM_PRESET_RENDERER(object);
switch (property_id) {
case PROP_NAME:
g_free(self->name);
self->name = g_value_dup_string(value);
break;
case PROP_FREQUENCY:
g_free(self->freq_text);
self->frequency = g_value_get_ulong(value);
self->freq_text = g_strdup_printf("%.1f MHz",
self->frequency / 1000000.0f);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
break;
}
}
static void cfm_preset_renderer_get_property(GObject *object, guint property_id,
GValue *value, GParamSpec *pspec)
{
CFmPresetRenderer *self = CFM_PRESET_RENDERER(object);
switch (property_id) {
case PROP_NAME:
g_value_set_string(value, self->name);
break;
case PROP_FREQUENCY:
g_value_set_ulong(value, self->frequency);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
break;
}
}
static void cfm_preset_renderer_finalize(GObject *object)
{
CFmPresetRenderer *self = CFM_PRESET_RENDERER(object);
g_free(self->name);
g_free(self->freq_text);
G_OBJECT_CLASS(cfm_preset_renderer_parent_class)->finalize(object);
}
static void cfm_preset_renderer_class_init (CFmPresetRendererClass *klass)
{
GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
GtkCellRendererClass* parent_class = GTK_CELL_RENDERER_CLASS (klass);
GParamSpec *param_spec;
parent_class->get_size = cfm_preset_renderer_get_size;
parent_class->render = cfm_preset_renderer_render;
gobject_class->set_property = cfm_preset_renderer_set_property;
gobject_class->get_property = cfm_preset_renderer_get_property;
gobject_class->finalize = cfm_preset_renderer_finalize;
param_spec = g_param_spec_ulong("frequency",
"Frequency",
"This is the frequency of this preset, in Hz",
ABS_RANGE_LOW, ABS_RANGE_HIGH, ABS_RANGE_LOW,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
properties[PROP_FREQUENCY] = param_spec;
g_object_class_install_property(gobject_class, PROP_FREQUENCY, param_spec);
param_spec = g_param_spec_string("name",
"Name",
"Name for this preset",
"",
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
properties[PROP_NAME] = param_spec;
g_object_class_install_property(gobject_class, PROP_NAME, param_spec);
}
GtkCellRenderer* cfm_preset_renderer_new()
{
return g_object_new(CFM_TYPE_PRESET_RENDERER, NULL);
}
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