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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/views/tabs/tab_overview_container.h"
#include <gtk/gtk.h>
#include "app/gfx/canvas.h"
#include "app/gfx/path.h"
#include "chrome/browser/views/tabs/tab_overview_grid.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "views/widget/widget_gtk.h"
// Padding between the edges of us and the grid.
static const int kVerticalPadding = 43;
static const int kHorizontalPadding = 30;
// Height of the arrow.
static const int kArrowHeight = 28;
// Inset of the slight rounding on the corners.
static const int kEdgeInset = 5;
TabOverviewContainer::TabOverviewContainer() {
}
TabOverviewContainer::~TabOverviewContainer() {
}
void TabOverviewContainer::SetMaxSize(const gfx::Size& max_size) {
GetTabOverviewGrid()->set_max_size(
gfx::Size(max_size.width() - kHorizontalPadding * 2,
max_size.height() - kVerticalPadding * 2 - kArrowHeight));
}
void TabOverviewContainer::UpdateWidgetShape(int horizontal_center,
int width, int height) {
int bottom_y = height - kArrowHeight;
int right_edge = width - 1;
int center = width / 2;
// The points, in alternating x,y pairs.
int points[] = {
kEdgeInset, 0,
right_edge - kEdgeInset, 0,
right_edge, kEdgeInset,
right_edge, bottom_y - kEdgeInset - 1,
right_edge - kEdgeInset, bottom_y - 1,
center + kArrowHeight / 2, bottom_y - 1,
center, bottom_y - 1 + kArrowHeight,
center - kArrowHeight / 2, bottom_y - 1,
kEdgeInset, bottom_y - 1,
0, bottom_y - 1 - kEdgeInset,
0, kEdgeInset,
};
gfx::Path path;
path.moveTo(SkIntToScalar(points[0]), SkIntToScalar(points[1]));
for (size_t i = 2; i < arraysize(points); i += 2)
path.lineTo(SkIntToScalar(points[i]), SkIntToScalar(points[i + 1]));
GetWidget()->SetShape(path);
}
gfx::Size TabOverviewContainer::GetPreferredSize() {
gfx::Size tab_overview_pref = GetTabOverviewGrid()->GetPreferredSize();
return gfx::Size(kHorizontalPadding * 2 + tab_overview_pref.width(),
kVerticalPadding * 2 + tab_overview_pref.height() +
kArrowHeight);
}
void TabOverviewContainer::Layout() {
GetTabOverviewGrid()->SetBounds(kHorizontalPadding, kVerticalPadding,
width() - kHorizontalPadding * 2,
height() - kVerticalPadding * 2 -
kArrowHeight);
}
void TabOverviewContainer::Paint(gfx::Canvas* canvas) {
SkPoint points[] = { { SkIntToScalar(0), SkIntToScalar(0) },
{ SkIntToScalar(0), SkIntToScalar(height()) } };
SkColor colors[] = { SkColorSetARGB(242, 255, 255, 255),
SkColorSetARGB(212, 255, 255, 255), };
SkShader* shader = SkGradientShader::CreateLinear(
points, colors, NULL, 2, SkShader::kRepeat_TileMode);
SkPaint paint;
paint.setShader(shader);
shader = NULL;
paint.setStyle(SkPaint::kFill_Style);
paint.setPorterDuffXfermode(SkPorterDuff::kSrcOver_Mode);
canvas->drawPaint(paint);
}
void TabOverviewContainer::DidChangeBounds(const gfx::Rect& previous,
const gfx::Rect& current) {
Layout();
}
TabOverviewGrid* TabOverviewContainer::GetTabOverviewGrid() {
return static_cast<TabOverviewGrid*>(GetChildViewAt(0));
}
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