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// Copyright (c) 2011 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/ui/gtk/infobars/infobar_container_gtk.h"
#include <gtk/gtk.h>
#include <utility>
#include "base/message_loop/message_loop.h"
#include "chrome/browser/infobars/infobar_delegate.h"
#include "chrome/browser/platform_util.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/gtk/browser_window_gtk.h"
#include "chrome/browser/ui/gtk/gtk_util.h"
#include "chrome/browser/ui/gtk/infobars/infobar_gtk.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "ui/gfx/canvas_skia_paint.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/gtk_compat.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/skia_utils_gtk.h"
InfoBarContainerGtk::InfoBarContainerGtk(InfoBarContainer::Delegate* delegate,
Profile* profile)
: InfoBarContainer(delegate),
profile_(profile),
container_(gtk_vbox_new(FALSE, 0)) {
gtk_widget_show(widget());
}
InfoBarContainerGtk::~InfoBarContainerGtk() {
RemoveAllInfoBarsForDestruction();
container_.Destroy();
}
int InfoBarContainerGtk::TotalHeightOfAnimatingBars() const {
int sum = 0;
for (std::vector<InfoBarGtk*>::const_iterator it = infobars_gtk_.begin();
it != infobars_gtk_.end(); ++it) {
sum += (*it)->AnimatingHeight();
}
return sum;
}
bool InfoBarContainerGtk::ContainsInfobars() const {
return !infobars_gtk_.empty();
}
void InfoBarContainerGtk::PlatformSpecificAddInfoBar(InfoBar* infobar,
size_t position) {
InfoBarGtk* infobar_gtk = static_cast<InfoBarGtk*>(infobar);
infobar_gtk->InitWidgets();
infobars_gtk_.insert(infobars_gtk_.begin() + position, infobar_gtk);
if (infobars_gtk_.back() == infobar_gtk) {
gtk_box_pack_start(GTK_BOX(widget()), infobar_gtk->widget(),
FALSE, FALSE, 0);
} else {
// Clear out our container and then repack it to make sure everything is in
// the right order.
gtk_util::RemoveAllChildren(widget());
// Repack our container.
for (std::vector<InfoBarGtk*>::const_iterator it = infobars_gtk_.begin();
it != infobars_gtk_.end(); ++it) {
gtk_box_pack_start(GTK_BOX(widget()), (*it)->widget(),
FALSE, FALSE, 0);
}
}
}
void InfoBarContainerGtk::PlatformSpecificRemoveInfoBar(InfoBar* infobar) {
InfoBarGtk* infobar_gtk = static_cast<InfoBarGtk*>(infobar);
gtk_container_remove(GTK_CONTAINER(widget()), infobar_gtk->widget());
std::vector<InfoBarGtk*>::iterator it =
std::find(infobars_gtk_.begin(), infobars_gtk_.end(), infobar);
if (it != infobars_gtk_.end())
infobars_gtk_.erase(it);
base::MessageLoop::current()->DeleteSoon(FROM_HERE, infobar);
}
void InfoBarContainerGtk::PlatformSpecificInfoBarStateChanged(
bool is_animating) {
// Force a redraw of all infobars since something has a new height and we
// need to make sure we animate our arrows.
for (std::vector<InfoBarGtk*>::iterator it = infobars_gtk_.begin();
it != infobars_gtk_.end(); ++it) {
gtk_widget_queue_draw((*it)->widget());
}
}
void InfoBarContainerGtk::PaintInfobarBitsOn(GtkWidget* sender,
GdkEventExpose* expose,
InfoBarGtk* infobar) {
if (infobars_gtk_.empty())
return;
// For each infobar after |infobar| (or starting from the beginning if NULL),
// we draw each every arrow and rely on clipping rects to ignore overdraw.
std::vector<InfoBarGtk*>::iterator it;
if (infobar) {
it = std::find(infobars_gtk_.begin(), infobars_gtk_.end(), infobar);
if (it == infobars_gtk_.end()) {
NOTREACHED();
return;
}
it++;
if (it == infobars_gtk_.end()) {
// |infobar| is the last infobar in the list and thus doesn't need to
// paint the next infobar's arrow.
return;
}
} else {
it = infobars_gtk_.begin();
}
// Figure out the x location so that that arrow is over the location item.
GtkWindow* parent = platform_util::GetTopLevel(sender);
BrowserWindowGtk* browser_window =
BrowserWindowGtk::GetBrowserWindowForNativeWindow(parent);
int x = browser_window ?
browser_window->GetXPositionOfLocationIcon(sender) : 0;
for (; it != infobars_gtk_.end(); ++it) {
// Find the location of the arrow in |sender|'s coordinate space relative
// to the infobar.
int y = 0;
gtk_widget_translate_coordinates((*it)->widget(), sender,
0, 0,
NULL, &y);
if (!gtk_widget_get_has_window(sender)) {
GtkAllocation allocation;
gtk_widget_get_allocation(sender, &allocation);
y += allocation.y;
}
// We rely on the +1 in the y calculation so we hide the bottom of the drawn
// triangle just right outside the view bounds.
gfx::Rect bounds(x - (*it)->arrow_half_width(),
y - (*it)->arrow_height() + 1,
2 * (*it)->arrow_half_width(),
(*it)->arrow_target_height());
PaintArrowOn(sender, expose, bounds, *it);
}
}
void InfoBarContainerGtk::PaintArrowOn(GtkWidget* widget,
GdkEventExpose* expose,
const gfx::Rect& bounds,
InfoBarGtk* source) {
// TODO(erg): All of this could be rewritten in cairo.
SkPath path;
path.moveTo(bounds.x() + 0.5, bounds.bottom() + 0.5);
path.rLineTo(bounds.width() / 2.0, -bounds.height());
path.lineTo(bounds.right() + 0.5, bounds.bottom() + 0.5);
path.close();
SkPaint paint;
paint.setStrokeWidth(1);
paint.setStyle(SkPaint::kFill_Style);
paint.setAntiAlias(true);
SkPoint grad_points[2];
grad_points[0].set(SkIntToScalar(0), SkIntToScalar(bounds.bottom()));
grad_points[1].set(SkIntToScalar(0),
SkIntToScalar(bounds.bottom() +
source->arrow_target_height()));
SkColor grad_colors[2];
grad_colors[0] = source->ConvertGetColor(&InfoBarGtk::GetTopColor);
grad_colors[1] = source->ConvertGetColor(&InfoBarGtk::GetBottomColor);
skia::RefPtr<SkShader> gradient_shader = skia::AdoptRef(
SkGradientShader::CreateLinear(
grad_points, grad_colors, NULL, 2, SkShader::kMirror_TileMode));
paint.setShader(gradient_shader.get());
gfx::CanvasSkiaPaint canvas_paint(expose, false);
SkCanvas& canvas = *canvas_paint.sk_canvas();
canvas.drawPath(path, paint);
paint.setShader(NULL);
paint.setColor(SkColorSetA(gfx::GdkColorToSkColor(source->GetBorderColor()),
SkColorGetA(grad_colors[0])));
paint.setStyle(SkPaint::kStroke_Style);
canvas.drawPath(path, paint);
}
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