mirror of
https://github.com/RGBCube/serenity
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7dc5a3ead8
This patch removes size policies and preferred sizes, and replaces them
with min-size and max-size for each widget.
Box layout now works in 3 passes:
1) Set all items (widgets/spacers) to their min-size
2) Distribute remaining space evenly, respecting max-size
3) Place widgets one after the other, adding spacing in between
I've also added convenience helpers for setting a fixed size (which is
the same as setting min-size and max-size to the same value.)
This significantly reduces the verbosity of widget layout and makes GML
a bit more pleasant to write, too. :^)
102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
/*
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* Copyright (c) 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 <LibGUI/BoxLayout.h>
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#include <LibGUI/BreadcrumbBar.h>
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#include <LibGUI/Button.h>
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#include <LibGfx/Font.h>
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namespace GUI {
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// FIXME: Move this somewhere else
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class UnuncheckableButton : public GUI::Button {
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C_OBJECT(UnuncheckableButton);
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public:
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virtual ~UnuncheckableButton() override { }
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virtual bool is_uncheckable() const override { return false; }
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private:
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UnuncheckableButton() { }
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};
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BreadcrumbBar::BreadcrumbBar()
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{
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auto& layout = set_layout<HorizontalBoxLayout>();
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layout.set_spacing(0);
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}
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BreadcrumbBar::~BreadcrumbBar()
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{
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}
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void BreadcrumbBar::clear_segments()
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{
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m_segments.clear();
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remove_all_children();
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}
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void BreadcrumbBar::append_segment(const String& text, const Gfx::Bitmap* icon, const String& data)
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{
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auto& button = add<UnuncheckableButton>();
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button.set_button_style(Gfx::ButtonStyle::CoolBar);
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button.set_text(text);
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button.set_icon(icon);
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button.set_focus_policy(FocusPolicy::TabFocus);
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button.set_checkable(true);
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button.set_exclusive(true);
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button.on_click = [this, index = m_segments.size()](auto) {
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if (on_segment_click)
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on_segment_click(index);
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};
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auto button_text_width = button.font().width(text);
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auto icon_width = icon ? icon->width() : 0;
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auto icon_padding = icon ? 4 : 0;
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button.set_fixed_size(button_text_width + icon_width + icon_padding + 16, 16 + 8);
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Segment segment { icon, text, data, button.make_weak_ptr<GUI::Button>() };
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m_segments.append(move(segment));
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}
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void BreadcrumbBar::set_selected_segment(Optional<size_t> index)
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{
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if (!index.has_value()) {
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for_each_child_of_type<GUI::AbstractButton>([&](auto& button) {
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button.set_checked(false);
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return IterationDecision::Continue;
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});
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return;
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}
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auto& segment = m_segments[index.value()];
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ASSERT(segment.button);
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segment.button->set_checked(true);
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}
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}
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