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7399874479
If we're sharing buffers, we only want to share trivial structures as anything else could potentially share internal pointers, which most likely is going to cause problems due to different address spaces. Fix the GUI::SystemTheme structure, which was not trivial, which is now caught at compile time. Fixes #3650
130 lines
4.4 KiB
C++
130 lines
4.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/SharedBuffer.h>
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#include <LibCore/ConfigFile.h>
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#include <LibGfx/SystemTheme.h>
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#include <string.h>
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namespace Gfx {
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static SystemTheme dummy_theme;
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static const SystemTheme* theme_page = &dummy_theme;
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static RefPtr<SharedBuffer> theme_buffer;
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const SystemTheme& current_system_theme()
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{
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ASSERT(theme_page);
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return *theme_page;
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}
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int current_system_theme_buffer_id()
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{
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ASSERT(theme_buffer);
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return theme_buffer->shbuf_id();
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}
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void set_system_theme(SharedBuffer& buffer)
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{
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theme_buffer = buffer;
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theme_page = theme_buffer->data<SystemTheme>();
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}
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RefPtr<SharedBuffer> load_system_theme(const String& path)
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{
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auto file = Core::ConfigFile::open(path);
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auto buffer = SharedBuffer::create_with_size(sizeof(SystemTheme));
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auto* data = buffer->data<SystemTheme>();
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auto get_color = [&](auto& name) {
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auto color_string = file->read_entry("Colors", name);
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auto color = Color::from_string(color_string);
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if (!color.has_value())
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return Color(Color::Black);
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return color.value();
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};
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auto get_metric = [&](auto& name, auto role) {
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int metric = file->read_num_entry("Metrics", name, -1);
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if (metric == -1) {
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switch (role) {
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case (int)MetricRole::TitleHeight:
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return 19;
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case (int)MetricRole::TitleButtonHeight:
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return 15;
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case (int)MetricRole::TitleButtonWidth:
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return 15;
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default:
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dbg() << "Metric " << name << " has no fallback value!";
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return 16;
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}
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}
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return metric;
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};
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auto get_path = [&](auto& name, auto role) {
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auto path = file->read_entry("Paths", name);
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if (path.is_empty()) {
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switch (role) {
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case (int)PathRole::TitleButtonIcons:
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return "/res/icons/16x16/";
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default:
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return "/res/";
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}
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}
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return &path[0];
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};
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#undef __ENUMERATE_COLOR_ROLE
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#define __ENUMERATE_COLOR_ROLE(role) \
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data->color[(int)ColorRole::role] = get_color(#role).value();
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ENUMERATE_COLOR_ROLES(__ENUMERATE_COLOR_ROLE)
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#undef __ENUMERATE_COLOR_ROLE
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#define DO_METRIC(x) \
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data->metric[(int)MetricRole::x] = get_metric(#x, (int)MetricRole::x)
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DO_METRIC(TitleHeight);
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DO_METRIC(TitleButtonWidth);
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DO_METRIC(TitleButtonHeight);
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#define DO_PATH(x) \
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do { \
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auto path = get_path(#x, (int)PathRole::x); \
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memcpy(data->path[(int)PathRole::x], path, min(strlen(path) + 1, sizeof(data->path[(int)PathRole::x]))); \
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data->path[(int)PathRole::x][sizeof(data->path[(int)PathRole::x]) - 1] = '\0'; \
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} while (0)
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DO_PATH(TitleButtonIcons);
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buffer->seal();
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buffer->share_globally();
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return buffer;
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}
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}
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