static gboolean
gimp_handle_bar_motion_notify (GtkWidget *widget,
GdkEventMotion *mevent)
{
GimpHandleBar *bar = GIMP_HANDLE_BAR (widget);
GtkAllocation allocation;
gint border;
gint width;
gdouble value;
gtk_widget_get_allocation (widget, &allocation);
border = gtk_container_get_border_width (GTK_CONTAINER (widget));
width = allocation.width - 2 * border;
if (width < 1)
return FALSE;
value = ((gdouble) (mevent->x - border) /
(gdouble) width *
(bar->upper - bar->lower + 1));
gtk_adjustment_set_value (bar->slider_adj[bar->active_slider], value);
return TRUE;
}
static void
gimp_handle_bar_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpHandleBar *bar = GIMP_HANDLE_BAR (object);
switch (property_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, bar->orientation);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gboolean
gimp_handle_bar_button_press (GtkWidget *widget,
GdkEventButton *bevent)
{
GimpHandleBar *bar= GIMP_HANDLE_BAR (widget);
GtkAllocation allocation;
gint border;
gint width;
gdouble value;
gint min_dist;
gint i;
gtk_widget_get_allocation (widget, &allocation);
border = gtk_container_get_border_width (GTK_CONTAINER (widget));
width = allocation.width - 2 * border;
if (width < 1)
return FALSE;
min_dist = G_MAXINT;
for (i = 0; i < 3; i++)
if (bar->slider_pos[i] != -1)
{
gdouble dist = bevent->x - bar->slider_pos[i] + border;
if (fabs (dist) < min_dist ||
(fabs (dist) == min_dist && dist > 0))
{
bar->active_slider = i;
min_dist = fabs (dist);
}
}
value = ((gdouble) (bevent->x - border) /
(gdouble) width *
(bar->upper - bar->lower + 1));
gtk_adjustment_set_value (bar->slider_adj[bar->active_slider], value);
return TRUE;
}
static gboolean
gimp_handle_bar_expose (GtkWidget *widget,
GdkEventExpose *eevent)
{
GimpHandleBar *bar = GIMP_HANDLE_BAR (widget);
GtkAllocation allocation;
cairo_t *cr;
gint x, y;
gint width, height;
gint i;
gtk_widget_get_allocation (widget, &allocation);
x = y = gtk_container_get_border_width (GTK_CONTAINER (widget));
width = allocation.width - 2 * x;
height = allocation.height - 2 * y;
if (! gtk_widget_get_has_window (widget))
{
x += allocation.x;
y += allocation.y;
}
cr = gdk_cairo_create (gtk_widget_get_window (widget));
gdk_cairo_region (cr, eevent->region);
cairo_clip (cr);
cairo_set_line_width (cr, 1.0);
cairo_translate (cr, 0.5, 0.5);
for (i = 0; i < 3; i++)
{
bar->slider_pos[i] = -1;
if (bar->slider_adj[i])
{
bar->slider_pos[i] = ROUND ((gdouble) width *
(gtk_adjustment_get_value (bar->slider_adj[i]) - bar->lower) /
(bar->upper - bar->lower + 1));
cairo_set_source_rgb (cr, 0.5 * i, 0.5 * i, 0.5 * i);
cairo_move_to (cr,
x + bar->slider_pos[i],
y);
cairo_line_to (cr,
x + bar->slider_pos[i] - (height - 1) / 2,
y + height - 1);
cairo_line_to (cr,
x + bar->slider_pos[i] + (height - 1) / 2,
y + height - 1);
cairo_line_to (cr,
x + bar->slider_pos[i],
y);
cairo_fill_preserve (cr);
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
cairo_stroke (cr);
}
}
cairo_destroy (cr);
return FALSE;
}
static void
gimp_levels_tool_dialog (GimpImageMapTool *image_map_tool)
{
GimpLevelsTool *tool = GIMP_LEVELS_TOOL (image_map_tool);
GimpToolOptions *tool_options = GIMP_TOOL_GET_OPTIONS (image_map_tool);
GimpLevelsConfig *config = tool->config;
GtkListStore *store;
GtkSizeGroup *label_group;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *vbox2;
GtkWidget *vbox3;
GtkWidget *hbox;
GtkWidget *hbox2;
GtkWidget *label;
GtkWidget *menu;
GtkWidget *frame;
GtkWidget *hbbox;
GtkWidget *button;
GtkWidget *spinbutton;
GtkAdjustment *adjustment;
GtkWidget *bar;
GtkWidget *handle_bar;
gint border;
g_signal_connect (image_map_tool->settings_box, "file-dialog-setup",
G_CALLBACK (gimp_levels_tool_export_setup),
image_map_tool);
main_vbox = gimp_image_map_tool_dialog_get_vbox (image_map_tool);
label_group = gimp_image_map_tool_dialog_get_label_group (image_map_tool);
/* The option menu for selecting channels */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
label = gtk_label_new_with_mnemonic (_("Cha_nnel:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_size_group_add_widget (label_group, label);
store = gimp_enum_store_new_with_range (GIMP_TYPE_HISTOGRAM_CHANNEL,
GIMP_HISTOGRAM_VALUE,
GIMP_HISTOGRAM_ALPHA);
menu = gimp_enum_combo_box_new_with_model (GIMP_ENUM_STORE (store));
g_object_unref (store);
g_signal_connect (menu, "changed",
G_CALLBACK (levels_channel_callback),
tool);
gimp_enum_combo_box_set_stock_prefix (GIMP_ENUM_COMBO_BOX (menu),
"gimp-channel");
gtk_box_pack_start (GTK_BOX (hbox), menu, FALSE, FALSE, 0);
gtk_widget_show (menu);
tool->channel_menu = menu;
gtk_label_set_mnemonic_widget (GTK_LABEL (label), menu);
button = gtk_button_new_with_mnemonic (_("R_eset Channel"));
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (levels_channel_reset_callback),
tool);
menu = gimp_prop_enum_stock_box_new (G_OBJECT (tool_options),
"histogram-scale", "gimp-histogram",
0, 0);
gtk_box_pack_end (GTK_BOX (hbox), menu, FALSE, FALSE, 0);
gtk_widget_show (menu);
/* Input levels frame */
frame = gimp_frame_new (_("Input Levels"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (frame), vbox2);
gtk_widget_show (vbox2);
tool->histogram_view = gimp_histogram_view_new (FALSE);
gtk_box_pack_start (GTK_BOX (vbox2), tool->histogram_view, TRUE, TRUE, 0);
gtk_widget_show (GTK_WIDGET (tool->histogram_view));
gimp_histogram_options_connect_view (GIMP_HISTOGRAM_OPTIONS (tool_options),
GIMP_HISTOGRAM_VIEW (tool->histogram_view));
g_object_get (tool->histogram_view, "border-width", &border, NULL);
vbox3 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox3), border);
gtk_box_pack_start (GTK_BOX (vbox2), vbox3, FALSE, FALSE, 0);
gtk_widget_show (vbox3);
tool->input_bar = g_object_new (GIMP_TYPE_COLOR_BAR, NULL);
gtk_widget_set_size_request (tool->input_bar, -1, GRADIENT_HEIGHT / 2);
gtk_box_pack_start (GTK_BOX (vbox3), tool->input_bar, FALSE, FALSE, 0);
gtk_widget_show (tool->input_bar);
bar = g_object_new (GIMP_TYPE_COLOR_BAR, NULL);
gtk_widget_set_size_request (bar, -1, GRADIENT_HEIGHT / 2);
gtk_box_pack_start (GTK_BOX (vbox3), bar, FALSE, FALSE, 0);
gtk_widget_show (bar);
handle_bar = g_object_new (GIMP_TYPE_HANDLE_BAR, NULL);
gtk_widget_set_size_request (handle_bar, -1, CONTROL_HEIGHT);
gtk_box_pack_start (GTK_BOX (vbox3), handle_bar, FALSE, FALSE, 0);
gtk_widget_show (handle_bar);
gimp_handle_bar_connect_events (GIMP_HANDLE_BAR (handle_bar),
tool->input_bar);
gimp_handle_bar_connect_events (GIMP_HANDLE_BAR (handle_bar),
bar);
/* Horizontal box for input levels spinbuttons */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
/* low input spin */
hbox2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
gtk_box_pack_start (GTK_BOX (hbox), hbox2, FALSE, FALSE, 0);
gtk_widget_show (hbox2);
button = gimp_levels_tool_color_picker_new (tool, PICK_LOW_INPUT);
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
gtk_widget_show (button);
tool->low_input_spinbutton = spinbutton =
gimp_prop_spin_button_new (image_map_tool->config, "low-input",
0.01, 0.1, 1);
gtk_box_pack_start (GTK_BOX (hbox2), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
tool->low_input = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (spinbutton));
gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (handle_bar), 0,
tool->low_input);
/* input gamma spin */
spinbutton = gimp_prop_spin_button_new (image_map_tool->config, "gamma",
0.01, 0.1, 2);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, TRUE, FALSE, 0);
gimp_help_set_help_data (spinbutton, _("Gamma"), NULL);
gtk_widget_show (spinbutton);
tool->gamma = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (spinbutton));
tool->gamma_linear = GTK_ADJUSTMENT (gtk_adjustment_new (127, 0, 255,
0.1, 1.0, 0.0));
g_signal_connect (tool->gamma_linear, "value-changed",
G_CALLBACK (levels_linear_gamma_changed),
tool);
gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (handle_bar), 1,
tool->gamma_linear);
g_object_unref (tool->gamma_linear);
/* high input spin */
hbox2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
gtk_box_pack_end (GTK_BOX (hbox), hbox2, FALSE, FALSE, 0);
gtk_widget_show (hbox2);
button = gimp_levels_tool_color_picker_new (tool, PICK_HIGH_INPUT);
gtk_box_pack_start (GTK_BOX (hbox2), button, FALSE, FALSE, 0);
gtk_widget_show (button);
spinbutton = gimp_prop_spin_button_new (image_map_tool->config, "high-input",
0.01, 0.1, 1);
gtk_box_pack_start (GTK_BOX (hbox2), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
tool->high_input_spinbutton = spinbutton;
tool->high_input = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (spinbutton));
gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (handle_bar), 2,
tool->high_input);
/* Output levels frame */
frame = gimp_frame_new (_("Output Levels"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox2), border);
gtk_container_add (GTK_CONTAINER (frame), vbox2);
gtk_widget_show (vbox2);
tool->output_bar = g_object_new (GIMP_TYPE_COLOR_BAR, NULL);
gtk_widget_set_size_request (tool->output_bar, -1, GRADIENT_HEIGHT);
gtk_box_pack_start (GTK_BOX (vbox2), tool->output_bar, FALSE, FALSE, 0);
gtk_widget_show (tool->output_bar);
handle_bar = g_object_new (GIMP_TYPE_HANDLE_BAR, NULL);
gtk_widget_set_size_request (handle_bar, -1, CONTROL_HEIGHT);
gtk_box_pack_start (GTK_BOX (vbox2), handle_bar, FALSE, FALSE, 0);
gtk_widget_show (handle_bar);
gimp_handle_bar_connect_events (GIMP_HANDLE_BAR (handle_bar),
tool->output_bar);
/* Horizontal box for levels spin widgets */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
/* low output spin */
tool->low_output_spinbutton = spinbutton =
gimp_prop_spin_button_new (image_map_tool->config, "low-output",
0.01, 0.1, 1);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (spinbutton));
gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (handle_bar), 0, adjustment);
/* high output spin */
tool->high_output_spinbutton = spinbutton =
gimp_prop_spin_button_new (image_map_tool->config, "high-output",
0.01, 0.1, 1);
gtk_box_pack_end (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (spinbutton));
gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (handle_bar), 2, adjustment);
/* all channels frame */
frame = gimp_frame_new (_("All Channels"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
hbbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_end (GTK_BOX (hbox), hbbox, FALSE, FALSE, 0);
gtk_widget_show (hbbox);
button = gtk_button_new_with_mnemonic (_("_Auto"));
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gimp_help_set_help_data (button, _("Adjust levels automatically"), NULL);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (levels_stretch_callback),
tool);
button = gimp_levels_tool_color_picker_new (tool,
PICK_LOW_INPUT | PICK_ALL_CHANNELS);
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = gimp_levels_tool_color_picker_new (tool,
PICK_GAMMA | PICK_ALL_CHANNELS);
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = gimp_levels_tool_color_picker_new (tool,
PICK_HIGH_INPUT | PICK_ALL_CHANNELS);
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = gimp_stock_button_new (GIMP_STOCK_TOOL_CURVES,
_("Edit these Settings as Curves"));
gtk_box_pack_start (GTK_BOX (main_vbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (levels_to_curves_callback),
tool);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (tool->channel_menu),
config->channel);
}
