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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/display_feature.h"
namespace content {
std::vector<gfx::Rect> DisplayFeature::ComputeViewportSegments(
const gfx::Size& visible_viewport_size,
int root_view_offset_from_origin) const {
std::vector<gfx::Rect> viewport_segments;
int display_feature_end = offset + mask_length;
if (orientation == DisplayFeature::Orientation::kVertical) {
// If the display feature is vertically oriented, it splits or masks
// the widget into two side-by-side segments. Note that in the masking
// scenario, there is an area of the widget that are not covered by the
// union of the viewport segments - this area's pixels will not be visible
// to the user.
viewport_segments.emplace_back(0, 0, offset,
visible_viewport_size.height());
viewport_segments.emplace_back(
display_feature_end, 0,
visible_viewport_size.width() - display_feature_end,
visible_viewport_size.height());
} else {
// If the display feature is offset in the y direction, it splits or masks
// the widget into two stacked segments.
// We need to offset the display feature by the browser controls top height.
display_feature_end = display_feature_end - root_view_offset_from_origin;
int final_offset = offset - root_view_offset_from_origin;
if (final_offset < 0 || display_feature_end < 0) {
return viewport_segments;
}
viewport_segments.emplace_back(0, 0, visible_viewport_size.width(),
final_offset);
viewport_segments.emplace_back(
0, display_feature_end, visible_viewport_size.width(),
visible_viewport_size.height() - display_feature_end);
}
return viewport_segments;
}
// static
std::optional<DisplayFeature> DisplayFeature::Create(Orientation orientation,
int offset,
int mask_length,
int width,
int height,
ParamErrorEnum* error) {
if (!width && !height) {
*error = ParamErrorEnum::kDisplayFeatureWithZeroScreenSize;
return std::nullopt;
}
if (offset < 0 || mask_length < 0) {
*error = ParamErrorEnum::kNegativeDisplayFeatureParams;
return std::nullopt;
}
if (orientation == Orientation::kVertical && offset + mask_length > width) {
*error = ParamErrorEnum::kOutsideScreenWidth;
return std::nullopt;
}
if (orientation == Orientation::kHorizontal &&
offset + mask_length > height) {
*error = ParamErrorEnum::kOutsideScreenHeight;
return std::nullopt;
}
return DisplayFeature{orientation, offset, mask_length};
}
} // namespace content
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