Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 154 insertions, 0 deletions

diff --git a/Source/WebCore/platform/gtk/ScrollbarThemeGtk2.cpp b/Source/WebCore/platform/gtk/ScrollbarThemeGtk2.cpp
new file mode 100644
index 0000000..79295c1
--- /dev/null
+++ b/Source/WebCore/platform/gtk/ScrollbarThemeGtk2.cpp
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "ScrollbarThemeGtk.h"
+
+#ifdef GTK_API_VERSION_2
+
+#include "PlatformMouseEvent.h"
+#include "RenderThemeGtk.h"
+#include "ScrollView.h"
+#include "Scrollbar.h"
+#include "WidgetRenderingContext.h"
+#include "gtkdrawing.h"
+#include <gtk/gtk.h>
+
+namespace WebCore {
+
+static void gtkStyleSetCallback(GtkWidget* widget, GtkStyle* previous, ScrollbarThemeGtk* scrollbarTheme)
+{
+    scrollbarTheme->updateThemeProperties();
+}
+
+ScrollbarThemeGtk::ScrollbarThemeGtk()
+{
+    updateThemeProperties();
+    g_signal_connect(static_cast<RenderThemeGtk*>(RenderTheme::defaultTheme().get())->gtkScrollbar(),
+         "style-set", G_CALLBACK(gtkStyleSetCallback), this);
+}
+
+void ScrollbarThemeGtk::updateThemeProperties()
+{
+    MozGtkScrollbarMetrics metrics;
+    moz_gtk_get_scrollbar_metrics(&metrics);
+
+    m_thumbFatness = metrics.slider_width;
+    m_troughBorderWidth = metrics.trough_border;
+    m_stepperSize = metrics.stepper_size;
+    m_stepperSpacing = metrics.stepper_spacing;
+    m_minThumbLength = metrics.min_slider_size;
+    m_troughUnderSteppers = metrics.trough_under_steppers;
+    m_hasForwardButtonStartPart = metrics.has_secondary_forward_stepper;
+    m_hasBackButtonEndPart = metrics.has_secondary_backward_stepper;
+
+    updateScrollbarsFrameThickness();
+}
+
+void ScrollbarThemeGtk::paintTrackBackground(GraphicsContext* context, Scrollbar* scrollbar, const IntRect& rect)
+{
+    GtkWidgetState state;
+    state.focused = FALSE;
+    state.isDefault = FALSE;
+    state.canDefault = FALSE;
+    state.disabled = FALSE;
+    state.active = FALSE;
+    state.inHover = FALSE;
+
+    // Paint the track background. If the trough-under-steppers property is true, this
+    // should be the full size of the scrollbar, but if is false, it should only be the
+    // track rect.
+    IntRect fullScrollbarRect = rect;
+    if (m_troughUnderSteppers)
+        fullScrollbarRect = IntRect(scrollbar->x(), scrollbar->y(), scrollbar->width(), scrollbar->height());
+
+    GtkThemeWidgetType type = scrollbar->orientation() == VerticalScrollbar ? MOZ_GTK_SCROLLBAR_TRACK_VERTICAL : MOZ_GTK_SCROLLBAR_TRACK_HORIZONTAL;
+    WidgetRenderingContext widgetContext(context, fullScrollbarRect);
+    widgetContext.paintMozillaWidget(type, &state, 0);
+}
+
+void ScrollbarThemeGtk::paintScrollbarBackground(GraphicsContext* context, Scrollbar* scrollbar)
+{
+    // This is unused by the moz_gtk_scrollecd_window_paint.
+    GtkWidgetState state;
+    IntRect fullScrollbarRect = IntRect(scrollbar->x(), scrollbar->y(), scrollbar->width(), scrollbar->height());
+    WidgetRenderingContext widgetContext(context, fullScrollbarRect);
+    widgetContext.paintMozillaWidget(MOZ_GTK_SCROLLED_WINDOW, &state, 0);
+}
+
+void ScrollbarThemeGtk::paintThumb(GraphicsContext* context, Scrollbar* scrollbar, const IntRect& rect)
+{
+    GtkWidgetState state;
+    state.focused = FALSE;
+    state.isDefault = FALSE;
+    state.canDefault = FALSE;
+    state.disabled = FALSE;
+    state.active = scrollbar->pressedPart() == ThumbPart;
+    state.inHover = scrollbar->hoveredPart() == ThumbPart;
+    state.maxpos = scrollbar->maximum();
+    state.curpos = scrollbar->currentPos();
+
+    GtkThemeWidgetType type = scrollbar->orientation() == VerticalScrollbar ? MOZ_GTK_SCROLLBAR_THUMB_VERTICAL : MOZ_GTK_SCROLLBAR_THUMB_HORIZONTAL;
+    WidgetRenderingContext widgetContext(context, rect);
+    widgetContext.paintMozillaWidget(type, &state, 0);
+}
+
+void ScrollbarThemeGtk::paintButton(GraphicsContext* context, Scrollbar* scrollbar, const IntRect& rect, ScrollbarPart part)
+{
+    int flags = 0;
+    if (scrollbar->orientation() == VerticalScrollbar)
+        flags |= MOZ_GTK_STEPPER_VERTICAL;
+
+    if (part == ForwardButtonEndPart)
+        flags |= (MOZ_GTK_STEPPER_DOWN | MOZ_GTK_STEPPER_BOTTOM);
+    if (part == ForwardButtonStartPart)
+        flags |= MOZ_GTK_STEPPER_DOWN;
+
+    GtkWidgetState state;
+    state.focused = TRUE;
+    state.isDefault = TRUE;
+    state.canDefault = TRUE;
+    state.depressed = FALSE;
+
+    if ((BackButtonStartPart == part && scrollbar->currentPos())
+        || (BackButtonEndPart == part && scrollbar->currentPos())
+        || (ForwardButtonEndPart == part && scrollbar->currentPos() != scrollbar->maximum())
+        || (ForwardButtonStartPart == part && scrollbar->currentPos() != scrollbar->maximum())) {
+        state.disabled = FALSE;
+        state.active = part == scrollbar->pressedPart();
+        state.inHover = part == scrollbar->hoveredPart();
+    } else {
+        state.disabled = TRUE;
+        state.active = FALSE;
+        state.inHover = FALSE;
+    }
+
+    WidgetRenderingContext widgetContext(context, rect);
+    widgetContext.paintMozillaWidget(MOZ_GTK_SCROLLBAR_BUTTON, &state, flags);
+}
+
+} // namespace WebCore
+
+#endif // GTK_API_VERSION_2