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-rw-r--r--gtk/gtkvscale.c441
1 files changed, 441 insertions, 0 deletions
diff --git a/gtk/gtkvscale.c b/gtk/gtkvscale.c
new file mode 100644
index 000000000..9c2e3058f
--- /dev/null
+++ b/gtk/gtkvscale.c
@@ -0,0 +1,441 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdio.h>
+#include "gtkvscale.h"
+#include "gtksignal.h"
+#include "gdk/gdkkeysyms.h"
+
+
+#define SCALE_CLASS(w) GTK_SCALE_CLASS (GTK_OBJECT (w)->klass)
+#define RANGE_CLASS(w) GTK_RANGE_CLASS (GTK_OBJECT (w)->klass)
+
+
+static void gtk_vscale_class_init (GtkVScaleClass *klass);
+static void gtk_vscale_init (GtkVScale *vscale);
+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_draw_slider (GtkRange *range);
+static void gtk_vscale_draw_value (GtkScale *scale);
+static gint gtk_vscale_trough_keys (GtkRange *range,
+ GdkEventKey *key,
+ GtkScrollType *scroll,
+ GtkTroughType *pos);
+
+
+guint
+gtk_vscale_get_type ()
+{
+ static guint vscale_type = 0;
+
+ if (!vscale_type)
+ {
+ GtkTypeInfo vscale_info =
+ {
+ "GtkVScale",
+ sizeof (GtkVScale),
+ sizeof (GtkVScaleClass),
+ (GtkClassInitFunc) gtk_vscale_class_init,
+ (GtkObjectInitFunc) gtk_vscale_init,
+ (GtkArgFunc) NULL,
+ };
+
+ vscale_type = gtk_type_unique (gtk_scale_get_type (), &vscale_info);
+ }
+
+ return vscale_type;
+}
+
+static void
+gtk_vscale_class_init (GtkVScaleClass *class)
+{
+ GtkWidgetClass *widget_class;
+ GtkRangeClass *range_class;
+ GtkScaleClass *scale_class;
+
+ widget_class = (GtkWidgetClass*) class;
+ range_class = (GtkRangeClass*) class;
+ scale_class = (GtkScaleClass*) class;
+
+ 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;
+
+ scale_class->draw_value = gtk_vscale_draw_value;
+}
+
+static void
+gtk_vscale_init (GtkVScale *vscale)
+{
+}
+
+GtkWidget*
+gtk_vscale_new (GtkAdjustment *adjustment)
+{
+ GtkVScale *vscale;
+
+ vscale = gtk_type_new (gtk_vscale_get_type ());
+
+ if (!adjustment)
+ adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
+
+ gtk_range_set_adjustment (GTK_RANGE (vscale), adjustment);
+
+ return GTK_WIDGET (vscale);
+}
+
+
+static void
+gtk_vscale_realize (GtkWidget *widget)
+{
+ GtkRange *range;
+ GdkWindowAttr attributes;
+ gint attributes_mask;
+ gint x, y, w, h;
+
+ 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);
+
+ attributes.x = widget->allocation.x;
+ attributes.y = widget->allocation.y;
+ attributes.width = widget->allocation.width;
+ attributes.height = widget->allocation.height;
+ attributes.wclass = GDK_INPUT_OUTPUT;
+ attributes.window_type = GDK_WINDOW_CHILD;
+ attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_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;
+ widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
+
+ gtk_vscale_pos_trough (GTK_VSCALE (widget), &x, &y, &w, &h);
+ attributes.x = x;
+ attributes.y = y;
+ attributes.width = w;
+ attributes.height = h;
+ attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
+ GDK_BUTTON_RELEASE_MASK |
+ GDK_ENTER_NOTIFY_MASK |
+ GDK_LEAVE_NOTIFY_MASK);
+
+ range->trough = gdk_window_new (widget->window, &attributes, attributes_mask);
+
+ attributes.width = RANGE_CLASS (range)->slider_width;
+ attributes.height = SCALE_CLASS (range)->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 (widget->window, widget);
+ gdk_window_set_user_data (range->trough, widget);
+ gdk_window_set_user_data (range->slider, widget);
+
+ gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+ 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);
+ gdk_window_show (range->trough);
+}
+
+static void
+gtk_vscale_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ GtkScale *scale;
+ gint value_width;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_VSCALE (widget));
+ g_return_if_fail (requisition != NULL);
+
+ scale = GTK_SCALE (widget);
+
+ requisition->width = (RANGE_CLASS (scale)->slider_width +
+ widget->style->klass->ythickness * 2);
+ requisition->height = (SCALE_CLASS (scale)->slider_length +
+ widget->style->klass->xthickness) * 2;
+
+ if (scale->draw_value)
+ {
+ value_width = gtk_scale_value_width (scale);
+
+ 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 < (widget->style->font->ascent + widget->style->font->descent))
+ requisition->height = widget->style->font->ascent + widget->style->font->descent;
+ }
+ 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 += widget->style->font->ascent + widget->style->font->descent;
+ }
+ }
+}
+
+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);
+
+ widget->allocation = *allocation;
+ if (GTK_WIDGET_REALIZED (widget))
+ {
+ range = GTK_RANGE (widget);
+ scale = GTK_SCALE (widget);
+
+ gdk_window_move_resize (widget->window,
+ allocation->x, allocation->y,
+ allocation->width, allocation->height);
+
+ 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));
+ }
+}
+
+static void
+gtk_vscale_pos_trough (GtkVScale *vscale,
+ gint *x,
+ gint *y,
+ gint *w,
+ gint *h)
+{
+ GtkWidget *widget;
+ GtkScale *scale;
+
+ 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));
+
+ widget = GTK_WIDGET (vscale);
+ scale = GTK_SCALE (vscale);
+
+ *w = (RANGE_CLASS (scale)->slider_width +
+ widget->style->klass->xthickness * 2);
+ *h = widget->allocation.height;
+
+ if (scale->draw_value)
+ {
+ *x = 0;
+ *y = 0;
+
+ switch (scale->value_pos)
+ {
+ case GTK_POS_LEFT:
+ *x = (gtk_scale_value_width (scale) +
+ (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 = widget->style->font->ascent + widget->style->font->descent;
+ *h -= *y;
+ break;
+ case GTK_POS_BOTTOM:
+ *x = (widget->allocation.width - *w) / 2;
+ *h -= widget->style->font->ascent + widget->style->font->descent;
+ break;
+ }
+ }
+ else
+ {
+ *x = (widget->allocation.width - *w) / 2;
+ *y = 0;
+ }
+ *y += 1;
+ *h -= 2;
+}
+
+static void
+gtk_vscale_draw_slider (GtkRange *range)
+{
+ GtkStateType state_type;
+ gint width, height;
+
+ g_return_if_fail (range != NULL);
+ g_return_if_fail (GTK_IS_VSCALE (range));
+
+ 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_style_set_background (GTK_WIDGET (range)->style, range->slider, state_type);
+ gdk_window_clear (range->slider);
+
+ gdk_window_get_size (range->slider, &width, &height);
+ gtk_draw_hline (GTK_WIDGET (range)->style, range->slider,
+ state_type, 1, width - 2, height / 2);
+
+ gtk_draw_shadow (GTK_WIDGET (range)->style, range->slider,
+ state_type, GTK_SHADOW_OUT,
+ 0, 0, -1, -1);
+ }
+}
+
+static void
+gtk_vscale_draw_value (GtkScale *scale)
+{
+ GtkStateType state_type;
+ gchar buffer[16];
+ gint text_width;
+ gint width, height;
+ gint x, y;
+
+ g_return_if_fail (scale != NULL);
+ g_return_if_fail (GTK_IS_VSCALE (scale));
+
+ if (scale->draw_value)
+ {
+ gdk_window_get_size (GTK_WIDGET (scale)->window, &width, &height);
+ gdk_window_clear_area (GTK_WIDGET (scale)->window, 1, 1, width - 3, height - 3);
+
+ sprintf (buffer, "%0.*f", GTK_RANGE (scale)->digits, GTK_RANGE (scale)->adjustment->value);
+ text_width = gdk_string_measure (GTK_WIDGET (scale)->style->font, buffer);
+
+ 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 + text_width;
+ y += ((height -
+ (GTK_WIDGET (scale)->style->font->ascent +
+ GTK_WIDGET (scale)->style->font->descent)) / 2 +
+ GTK_WIDGET (scale)->style->font->ascent);
+ 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 += ((height -
+ (GTK_WIDGET (scale)->style->font->ascent +
+ GTK_WIDGET (scale)->style->font->descent)) / 2 +
+ GTK_WIDGET (scale)->style->font->ascent);
+ 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 - text_width) / 2;
+ y -= GTK_WIDGET (scale)->style->font->descent;
+ 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 - text_width) / 2;
+ y += height + GTK_WIDGET (scale)->style->font->ascent;
+ break;
+ }
+
+ state_type = GTK_STATE_NORMAL;
+ if (!GTK_WIDGET_IS_SENSITIVE (scale))
+ state_type = GTK_STATE_INSENSITIVE;
+
+ gtk_draw_string (GTK_WIDGET (scale)->style,
+ GTK_WIDGET (scale)->window,
+ state_type, x, y, buffer);
+ }
+}
+
+static gint
+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;
+ *scroll = GTK_SCROLL_STEP_BACKWARD;
+ break;
+ case GDK_Down:
+ return_val = TRUE;
+ *scroll = GTK_SCROLL_STEP_FORWARD;
+ 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;
+}