/* GTK - The GIMP Toolkit
- * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ * Copyright (C) 2001 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
+#include <math.h>
#include <stdio.h>
+#include <stdlib.h>
#include "gtkvscale.h"
-#include "gtksignal.h"
-#include "gdk/gdkkeysyms.h"
#include "gtkintl.h"
+#define VALUE_SPACING 2
-#define SCALE_CLASS(w) GTK_SCALE_GET_CLASS (w)
-#define RANGE_CLASS(w) GTK_RANGE_GET_CLASS (w)
-
-enum {
- PROP_0,
- PROP_ADJUSTMENT
-};
+static gpointer parent_class;
static void gtk_vscale_class_init (GtkVScaleClass *klass);
static void gtk_vscale_init (GtkVScale *vscale);
-static void gtk_vscale_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec);
-static void gtk_vscale_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec);
-static void gtk_vscale_realize (GtkWidget *widget);
-static void gtk_vscale_size_request (GtkWidget *widget,
- GtkRequisition *requisition);
-static void gtk_vscale_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-static void gtk_vscale_pos_trough (GtkVScale *vscale,
- gint *x,
- gint *y,
- gint *w,
- gint *h);
-static void gtk_vscale_pos_background (GtkVScale *vscale,
- gint *x,
- gint *y,
- gint *w,
- gint *h);
-static void gtk_vscale_draw_slider (GtkRange *range);
-static void gtk_vscale_draw_value (GtkScale *scale);
-static gboolean gtk_vscale_trough_keys (GtkRange *range,
- GdkEventKey *key,
- GtkScrollType *scroll,
- GtkTroughType *pos);
-static void gtk_vscale_clear_background (GtkRange *range);
+static gboolean gtk_vscale_expose (GtkWidget *widget,
+ GdkEventExpose *event);
-GtkType
+GType
gtk_vscale_get_type (void)
{
- static GtkType vscale_type = 0;
+ static GType vscale_type = 0;
if (!vscale_type)
{
- static const GtkTypeInfo vscale_info =
+ static const GTypeInfo vscale_info =
{
- "GtkVScale",
- sizeof (GtkVScale),
- sizeof (GtkVScaleClass),
- (GtkClassInitFunc) gtk_vscale_class_init,
- (GtkObjectInitFunc) gtk_vscale_init,
- /* reserved_1 */ NULL,
- /* reserved_2 */ NULL,
- (GtkClassInitFunc) NULL,
+ sizeof (GtkVScaleClass),
+ NULL, /* base_init */
+ NULL, /* base_finalize */
+ (GClassInitFunc) gtk_vscale_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (GtkVScale),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) gtk_vscale_init,
};
- vscale_type = gtk_type_unique (GTK_TYPE_SCALE, &vscale_info);
+ vscale_type = g_type_register_static (GTK_TYPE_SCALE, "GtkVScale",
+ &vscale_info, 0);
}
return vscale_type;
static void
gtk_vscale_class_init (GtkVScaleClass *class)
{
- GtkObjectClass *object_class;
- GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkRangeClass *range_class;
- GtkScaleClass *scale_class;
-
- object_class = (GtkObjectClass*) class;
- gobject_class = G_OBJECT_CLASS (class);
- widget_class = (GtkWidgetClass*) class;
- range_class = (GtkRangeClass*) class;
- scale_class = (GtkScaleClass*) class;
-
- gobject_class->set_property = gtk_vscale_set_property;
- gobject_class->get_property = gtk_vscale_get_property;
-
- widget_class->realize = gtk_vscale_realize;
- widget_class->size_request = gtk_vscale_size_request;
- widget_class->size_allocate = gtk_vscale_size_allocate;
-
- range_class->slider_update = _gtk_range_default_vslider_update;
- range_class->trough_click = _gtk_range_default_vtrough_click;
- range_class->motion = _gtk_range_default_vmotion;
- range_class->draw_slider = gtk_vscale_draw_slider;
- range_class->trough_keys = gtk_vscale_trough_keys;
- range_class->clear_background = gtk_vscale_clear_background;
- scale_class->draw_value = gtk_vscale_draw_value;
+ widget_class = GTK_WIDGET_CLASS (class);
+ range_class = GTK_RANGE_CLASS (class);
- g_object_class_install_property (gobject_class,
- PROP_ADJUSTMENT,
- g_param_spec_object ("adjustment",
- _("Adjustment"),
- _("The GtkAdjustment that determines the values to use for this VScale."),
- GTK_TYPE_ADJUSTMENT,
- G_PARAM_READWRITE));
-}
+ parent_class = g_type_class_peek_parent (class);
-static void
-gtk_vscale_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- GtkVScale *vscale;
-
- vscale = GTK_VSCALE (object);
+ range_class->slider_detail = "vscale";
- switch (prop_id)
- {
- case PROP_ADJUSTMENT:
- gtk_range_set_adjustment (GTK_RANGE (vscale), g_value_get_object (value));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gtk_vscale_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GtkVScale *vscale;
-
- vscale = GTK_VSCALE (object);
-
- switch (prop_id)
- {
- case PROP_ADJUSTMENT:
- g_value_set_object (value,
- G_OBJECT (gtk_range_get_adjustment (GTK_RANGE (vscale))));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
+ widget_class->expose_event = gtk_vscale_expose;
}
static void
gtk_vscale_init (GtkVScale *vscale)
{
- GTK_WIDGET_SET_FLAGS (vscale, GTK_NO_WINDOW);
+ GtkRange *range;
+
+ range = GTK_RANGE (vscale);
+
+ range->orientation = GTK_ORIENTATION_VERTICAL;
}
GtkWidget*
gtk_vscale_new (GtkAdjustment *adjustment)
{
- GtkWidget *vscale;
-
- vscale = gtk_widget_new (GTK_TYPE_VSCALE,
- "adjustment", adjustment,
- NULL);
-
- return vscale;
+ return g_object_new (GTK_TYPE_VSCALE, "adjustment", adjustment, NULL);
}
-static void
-gtk_vscale_realize (GtkWidget *widget)
-{
- GtkRange *range;
- GdkWindowAttr attributes;
- gint attributes_mask;
- gint x, y, w, h;
- gint slider_width, slider_length;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VSCALE (widget));
-
- GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
- range = GTK_RANGE (widget);
-
- _gtk_range_get_props (range, &slider_width, NULL, NULL, NULL);
- gtk_widget_style_get (widget, "slider_length", &slider_length, NULL);
-
- widget->window = gtk_widget_get_parent_window (widget);
- gdk_window_ref (widget->window);
-
- gtk_vscale_pos_trough (GTK_VSCALE (widget), &x, &y, &w, &h);
-
- attributes.x = x;
- attributes.y = y;
- attributes.width = w;
- attributes.height = h;
- attributes.wclass = GDK_INPUT_OUTPUT;
- attributes.window_type = GDK_WINDOW_CHILD;
-
- attributes.event_mask = gtk_widget_get_events (widget) |
- (GDK_EXPOSURE_MASK |
- GDK_BUTTON_PRESS_MASK |
- GDK_BUTTON_RELEASE_MASK |
- GDK_ENTER_NOTIFY_MASK |
- GDK_LEAVE_NOTIFY_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;
-
- range->trough = gdk_window_new (widget->window, &attributes, attributes_mask);
-
- attributes.width = slider_width;
- attributes.height = slider_length;
- attributes.event_mask |= (GDK_BUTTON_MOTION_MASK |
- GDK_POINTER_MOTION_HINT_MASK);
-
- range->slider = gdk_window_new (range->trough, &attributes, attributes_mask);
-
- widget->style = gtk_style_attach (widget->style, widget->window);
-
- gdk_window_set_user_data (range->trough, widget);
- gdk_window_set_user_data (range->slider, widget);
-
- gtk_style_set_background (widget->style, range->trough, GTK_STATE_ACTIVE);
- gtk_style_set_background (widget->style, range->slider, GTK_STATE_NORMAL);
-
- _gtk_range_slider_update (GTK_RANGE (widget));
-
- gdk_window_show (range->slider);
-}
-
-static void
-gtk_vscale_clear_background (GtkRange *range)
+/**
+ * gtk_vscale_new_with_range:
+ * @min: minimum value
+ * @max: maximum value
+ * @step: step increment (tick size) used with keyboard shortcuts
+ *
+ * Creates a new vertical scale widget that lets the user input a
+ * number between @min and @max (including @min and @max) with the
+ * increment @step. @step must be nonzero; it's the distance the
+ * slider moves when using the arrow keys to adjust the scale value.
+ *
+ * Return value: a new #GtkVScale
+ **/
+GtkWidget*
+gtk_vscale_new_with_range (gdouble min,
+ gdouble max,
+ gdouble step)
{
- GtkWidget *widget;
+ GtkObject *adj;
GtkScale *scale;
- gint x, y, width, height;
-
- g_return_if_fail (range != NULL);
- g_return_if_fail (GTK_IS_SCALE (range));
-
- widget = GTK_WIDGET (range);
- scale = GTK_SCALE (range);
-
- gtk_vscale_pos_background (GTK_VSCALE (widget), &x, &y, &width, &height);
-
- gtk_widget_queue_clear_area (GTK_WIDGET (range),
- x, y, width, height);
-}
+ gint digits;
-static void
-gtk_vscale_size_request (GtkWidget *widget,
- GtkRequisition *requisition)
-{
- GtkScale *scale = GTK_SCALE (widget);
- gint slider_width, slider_length, trough_border;
-
- _gtk_range_get_props (GTK_RANGE (scale),
- &slider_width, &trough_border, NULL, NULL);
- gtk_widget_style_get (widget, "slider_length", &slider_length, NULL);
-
- requisition->width = (slider_width + trough_border * 2);
- requisition->height = (slider_length + trough_border) * 2;
-
- if (scale->draw_value)
- {
- gint value_width, value_height;
- gtk_scale_get_value_size (scale, &value_width, &value_height);
-
- if ((scale->value_pos == GTK_POS_LEFT) ||
- (scale->value_pos == GTK_POS_RIGHT))
- {
- requisition->width += value_width + SCALE_CLASS (scale)->value_spacing;
- if (requisition->height < (value_height))
- requisition->height = value_height;
- }
- else if ((scale->value_pos == GTK_POS_TOP) ||
- (scale->value_pos == GTK_POS_BOTTOM))
- {
- if (requisition->width < value_width)
- requisition->width = value_width;
- requisition->height += value_height;
- }
- }
-}
+ g_return_val_if_fail (min < max, NULL);
+ g_return_val_if_fail (step != 0.0, NULL);
-static void
-gtk_vscale_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation)
-{
- GtkRange *range;
- GtkScale *scale;
- gint width, height;
- gint x, y;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VSCALE (widget));
- g_return_if_fail (allocation != NULL);
+ adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
- widget->allocation = *allocation;
- if (GTK_WIDGET_REALIZED (widget))
- {
- range = GTK_RANGE (widget);
- scale = GTK_SCALE (widget);
-
- gtk_vscale_pos_trough (GTK_VSCALE (widget), &x, &y, &width, &height);
-
- gdk_window_move_resize (range->trough, x, y, width, height);
- _gtk_range_slider_update (GTK_RANGE (widget));
- }
-}
+ scale = g_object_new (GTK_TYPE_VSCALE,
+ "adjustment", adj,
+ NULL);
-static void
-gtk_vscale_pos_trough (GtkVScale *vscale,
- gint *x,
- gint *y,
- gint *w,
- gint *h)
-{
- GtkWidget *widget = GTK_WIDGET (vscale);
- GtkScale *scale = GTK_SCALE (vscale);
- gint value_width, value_height;
- gint slider_width, trough_border;
-
- _gtk_range_get_props (GTK_RANGE (scale),
- &slider_width, &trough_border, NULL, NULL);
-
- *w = (slider_width + trough_border * 2);
- *h = widget->allocation.height;
-
- if (scale->draw_value)
- {
- *x = 0;
- *y = 0;
-
- gtk_scale_get_value_size (scale, &value_width, &value_height);
+ if (fabs (step) >= 1.0 || step == 0.0)
+ digits = 0;
+ else {
+ digits = abs ((gint) floor (log10 (fabs (step))));
+ if (digits > 5)
+ digits = 5;
+ }
- switch (scale->value_pos)
- {
- case GTK_POS_LEFT:
- *x = (value_width + SCALE_CLASS (scale)->value_spacing +
- (widget->allocation.width - widget->requisition.width) / 2);
- break;
- case GTK_POS_RIGHT:
- *x = (widget->allocation.width - widget->requisition.width) / 2;
- break;
- case GTK_POS_TOP:
- *x = (widget->allocation.width - *w) / 2;
- *y = value_height;
- *h -= *y;
- break;
- case GTK_POS_BOTTOM:
- *x = (widget->allocation.width - *w) / 2;
- *h -= value_height;
- break;
- }
- }
- else
- {
- *x = (widget->allocation.width - *w) / 2;
- *y = 0;
- }
- *y += 1;
- *h -= 2;
+ gtk_scale_set_digits (scale, digits);
- *x += widget->allocation.x;
- *y += widget->allocation.y;
+ return GTK_WIDGET (scale);
}
-static void
-gtk_vscale_pos_background (GtkVScale *vscale,
- gint *x,
- gint *y,
- gint *w,
- gint *h)
+static gboolean
+gtk_vscale_expose (GtkWidget *widget,
+ GdkEventExpose *event)
{
- GtkWidget *widget;
+ GtkRange *range;
+ GtkVScale *vscale;
GtkScale *scale;
- gint slider_width, trough_border;
- gint tx, ty, twidth, theight;
-
- g_return_if_fail (vscale != NULL);
- g_return_if_fail (GTK_IS_VSCALE (vscale));
- g_return_if_fail ((x != NULL) && (y != NULL) && (w != NULL) && (h != NULL));
-
- gtk_vscale_pos_trough (vscale, &tx, &ty, &twidth, &theight);
-
- widget = GTK_WIDGET (vscale);
- scale = GTK_SCALE (vscale);
-
- *x = widget->allocation.x;
- *y = widget->allocation.y;
- *w = widget->allocation.width;
- *h = widget->allocation.height;
-
- switch (scale->value_pos)
- {
- case GTK_POS_LEFT:
- *w -= twidth;
- break;
- case GTK_POS_RIGHT:
- *x += twidth;
- *w -= twidth;
- break;
- case GTK_POS_TOP:
- *h -= theight;
- break;
- case GTK_POS_BOTTOM:
- *y += theight;
- *h -= theight;
- break;
- }
- *w = MAX (*w, 0);
- *h = MAX (*h, 0);
-}
-
-static void
-gtk_vscale_draw_slider (GtkRange *range)
-{
- GtkStateType state_type;
-
- g_return_if_fail (range != NULL);
- g_return_if_fail (GTK_IS_VSCALE (range));
+ range = GTK_RANGE (widget);
+ scale = GTK_SCALE (widget);
+ vscale = GTK_VSCALE (widget);
- if (range->slider)
- {
- if ((range->in_child == RANGE_CLASS (range)->slider) ||
- (range->click_child == RANGE_CLASS (range)->slider))
- state_type = GTK_STATE_PRELIGHT;
- else
- state_type = GTK_STATE_NORMAL;
-
- gtk_paint_slider (GTK_WIDGET (range)->style, range->slider, state_type,
- GTK_SHADOW_OUT,
- NULL, GTK_WIDGET (range), "vscale",
- 0, 0, -1, -1,
- GTK_ORIENTATION_VERTICAL);
- }
-}
+ /* We need to chain up _first_ so the various geometry members of
+ * GtkRange struct are updated.
+ */
+ if (GTK_WIDGET_CLASS (parent_class)->expose_event)
+ GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
-static void
-gtk_vscale_draw_value (GtkScale *scale)
-{
- GtkStateType state_type;
- GtkWidget *widget;
- gchar buffer[32];
- gint width, height;
- gint x, y;
-
- g_return_if_fail (scale != NULL);
- g_return_if_fail (GTK_IS_VSCALE (scale));
-
- widget = GTK_WIDGET (scale);
-
if (scale->draw_value)
{
PangoLayout *layout;
PangoRectangle logical_rect;
-
- sprintf (buffer, "%0.*f", GTK_RANGE (scale)->digits, GTK_RANGE (scale)->adjustment->value);
+ gchar *txt;
+ gint x, y;
+ GtkStateType state_type;
+ gint value_spacing;
- layout = gtk_widget_create_pango_layout (widget, buffer);
+ gtk_widget_style_get (widget, "value_spacing", &value_spacing, NULL);
+
+ txt = _gtk_scale_format_value (scale,
+ GTK_RANGE (scale)->adjustment->value);
+
+ layout = gtk_widget_create_pango_layout (widget, txt);
+ g_free (txt);
+
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
-
+
switch (scale->value_pos)
{
case GTK_POS_LEFT:
- gdk_window_get_position (GTK_RANGE (scale)->trough, &x, NULL);
- gdk_window_get_position (GTK_RANGE (scale)->slider, NULL, &y);
- gdk_window_get_size (GTK_RANGE (scale)->trough, &width, NULL);
- gdk_window_get_size (GTK_RANGE (scale)->slider, NULL, &height);
-
- x -= SCALE_CLASS (scale)->value_spacing + logical_rect.width;
- y += widget->allocation.y + (height - logical_rect.height) / 2 +
- PANGO_ASCENT (logical_rect);
+ x = range->range_rect.x - logical_rect.width - value_spacing;
+ y = range->slider_start + (range->slider_end - range->slider_start - logical_rect.height) / 2;
+ y = CLAMP (y, 0, widget->allocation.height - logical_rect.height);
break;
- case GTK_POS_RIGHT:
- gdk_window_get_position (GTK_RANGE (scale)->trough, &x, NULL);
- gdk_window_get_position (GTK_RANGE (scale)->slider, NULL, &y);
- gdk_window_get_size (GTK_RANGE (scale)->trough, &width, NULL);
- gdk_window_get_size (GTK_RANGE (scale)->slider, NULL, &height);
- x += width + SCALE_CLASS (scale)->value_spacing;
- y += widget->allocation.y + (height - logical_rect.height) / 2 +
- PANGO_ASCENT (logical_rect);
+ case GTK_POS_RIGHT:
+ x = range->range_rect.x + range->range_rect.width + value_spacing;
+ y = range->slider_start + (range->slider_end - range->slider_start - logical_rect.height) / 2;
+ y = CLAMP (y, 0, widget->allocation.height - logical_rect.height);
break;
- case GTK_POS_TOP:
- gdk_window_get_position (GTK_RANGE (scale)->trough, &x, &y);
- gdk_window_get_size (GTK_RANGE (scale)->slider, &width, NULL);
- gdk_window_get_size (GTK_RANGE (scale)->trough, NULL, &height);
- x += (width - logical_rect.width) / 2;
- y -= PANGO_DESCENT (logical_rect);
+ case GTK_POS_TOP:
+ x = range->range_rect.x + (range->range_rect.width - logical_rect.width) / 2;
+ y = range->range_rect.y - logical_rect.height - value_spacing;
break;
- case GTK_POS_BOTTOM:
- gdk_window_get_position (GTK_RANGE (scale)->trough, &x, &y);
- gdk_window_get_size (GTK_RANGE (scale)->slider, &width, NULL);
- gdk_window_get_size (GTK_RANGE (scale)->trough, NULL, &height);
- x += (width - logical_rect.width) / 2;
- y += height + PANGO_ASCENT (logical_rect);
+ case GTK_POS_BOTTOM:
+ x = range->range_rect.x + (range->range_rect.width - logical_rect.width) / 2;
+ y = range->range_rect.y + range->range_rect.height + value_spacing;
+ break;
+
+ default:
+ g_return_val_if_reached (FALSE);
+ x = 0;
+ y = 0;
break;
}
+ x += widget->allocation.x;
+ y += widget->allocation.y;
+
state_type = GTK_STATE_NORMAL;
if (!GTK_WIDGET_IS_SENSITIVE (scale))
state_type = GTK_STATE_INSENSITIVE;
gtk_paint_layout (widget->style,
widget->window,
state_type,
+ FALSE,
NULL,
widget,
"vscale",
x, y,
- layout);
+ layout);
- g_object_unref (G_OBJECT (layout));
+ g_object_unref (layout);
}
-}
-
-static gboolean
-gtk_vscale_trough_keys (GtkRange *range,
- GdkEventKey *key,
- GtkScrollType *scroll,
- GtkTroughType *pos)
-{
- gint return_val = FALSE;
- switch (key->keyval)
- {
- case GDK_Up:
- return_val = TRUE;
- if (key->state & GDK_CONTROL_MASK)
- *scroll = GTK_SCROLL_PAGE_UP;
- else
- *scroll = GTK_SCROLL_STEP_UP;
- break;
- case GDK_Down:
- return_val = TRUE;
- if (key->state & GDK_CONTROL_MASK)
- *scroll = GTK_SCROLL_PAGE_DOWN;
- else
- *scroll = GTK_SCROLL_STEP_DOWN;
- break;
- case GDK_Page_Up:
- return_val = TRUE;
- *scroll = GTK_SCROLL_PAGE_BACKWARD;
- break;
- case GDK_Page_Down:
- return_val = TRUE;
- *scroll = GTK_SCROLL_PAGE_FORWARD;
- break;
- case GDK_Home:
- return_val = TRUE;
- *pos = GTK_TROUGH_START;
- break;
- case GDK_End:
- return_val = TRUE;
- *pos = GTK_TROUGH_END;
- break;
- }
- return return_val;
+
+ return FALSE;
}
projects / ~andy / gtk / blobdiff