ladybird/Userland/Libraries/LibGUI/FontPicker.cpp
2021-01-12 12:17:46 +01:00

226 lines
8 KiB
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/QuickSort.h>
#include <LibGUI/Button.h>
#include <LibGUI/FontPicker.h>
#include <LibGUI/FontPickerDialogGML.h>
#include <LibGUI/ItemListModel.h>
#include <LibGUI/Label.h>
#include <LibGUI/ListView.h>
#include <LibGUI/ScrollBar.h>
#include <LibGUI/Widget.h>
#include <LibGfx/FontDatabase.h>
namespace GUI {
struct FontWeightNameMapping {
constexpr FontWeightNameMapping(int w, const char* n)
: weight(w)
, name(n)
{
}
int weight { 0 };
StringView name;
};
static constexpr FontWeightNameMapping font_weight_names[] = {
{ 100, "Thin" },
{ 200, "Extra Light" },
{ 300, "Light" },
{ 400, "Regular" },
{ 500, "Medium" },
{ 600, "Semi Bold" },
{ 700, "Bold" },
{ 800, "Extra Bold" },
{ 900, "Black" },
{ 950, "Extra Black" },
};
static constexpr StringView weight_to_name(int weight)
{
for (auto& it : font_weight_names) {
if (it.weight == weight)
return it.name;
}
return {};
}
class FontWeightListModel : public ItemListModel<int> {
public:
FontWeightListModel(const Vector<int>& weights)
: ItemListModel(weights)
{
}
virtual Variant data(const ModelIndex& index, ModelRole role) const override
{
if (role == ModelRole::Custom)
return m_data.at(index.row());
if (role == ModelRole::Display)
return String(weight_to_name(m_data.at(index.row())));
return ItemListModel::data(index, role);
}
};
FontPicker::FontPicker(Window* parent_window, const Gfx::Font* current_font, bool fixed_width_only)
: Dialog(parent_window)
, m_fixed_width_only(fixed_width_only)
{
set_title("Font picker");
resize(430, 280);
set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-font-editor.png"));
auto& widget = set_main_widget<GUI::Widget>();
if (!widget.load_from_gml(font_picker_dialog_gml))
ASSERT_NOT_REACHED();
m_family_list_view = *widget.find_descendant_of_type_named<ListView>("family_list_view");
m_family_list_view->set_model(ItemListModel<String>::create(m_families));
m_family_list_view->horizontal_scrollbar().set_visible(false);
m_weight_list_view = *widget.find_descendant_of_type_named<ListView>("weight_list_view");
m_weight_list_view->set_model(adopt(*new FontWeightListModel(m_weights)));
m_weight_list_view->horizontal_scrollbar().set_visible(false);
m_size_list_view = *widget.find_descendant_of_type_named<ListView>("size_list_view");
m_size_list_view->set_model(ItemListModel<int>::create(m_sizes));
m_size_list_view->horizontal_scrollbar().set_visible(false);
m_sample_text_label = *widget.find_descendant_of_type_named<Label>("sample_text_label");
m_families.clear();
Gfx::FontDatabase::the().for_each_font([&](auto& font) {
if (m_fixed_width_only && !font.is_fixed_width())
return;
if (!m_families.contains_slow(font.family()))
m_families.append(font.family());
});
quick_sort(m_families);
m_family_list_view->on_selection = [this](auto& index) {
m_family = index.data().to_string();
m_weights.clear();
Gfx::FontDatabase::the().for_each_font([&](auto& font) {
if (m_fixed_width_only && !font.is_fixed_width())
return;
if (font.family() == m_family.value() && !m_weights.contains_slow(font.weight())) {
m_weights.append(font.weight());
}
});
quick_sort(m_weights);
Optional<size_t> index_of_old_weight_in_new_list;
if (m_weight.has_value())
index_of_old_weight_in_new_list = m_weights.find_first_index(m_weight.value());
m_weight_list_view->model()->update();
m_weight_list_view->set_cursor(m_weight_list_view->model()->index(index_of_old_weight_in_new_list.value_or(0)), GUI::AbstractView::SelectionUpdate::Set);
update_font();
};
m_weight_list_view->on_selection = [this](auto& index) {
m_weight = index.data(ModelRole::Custom).to_i32();
m_sizes.clear();
Gfx::FontDatabase::the().for_each_font([&](auto& font) {
if (m_fixed_width_only && !font.is_fixed_width())
return;
if (font.family() == m_family.value() && font.weight() == m_weight.value()) {
m_sizes.append(font.presentation_size());
}
});
quick_sort(m_sizes);
Optional<size_t> index_of_old_size_in_new_list;
if (m_size.has_value()) {
index_of_old_size_in_new_list = m_sizes.find_first_index(m_size.value());
}
m_size_list_view->model()->update();
m_size_list_view->set_cursor(m_size_list_view->model()->index(index_of_old_size_in_new_list.value_or(0)), GUI::AbstractView::SelectionUpdate::Set);
update_font();
};
m_size_list_view->on_selection = [this](auto& index) {
m_size = index.data().to_i32();
update_font();
};
auto& ok_button = *widget.find_descendant_of_type_named<GUI::Button>("ok_button");
ok_button.on_click = [this](auto) {
done(ExecOK);
};
auto& cancel_button = *widget.find_descendant_of_type_named<GUI::Button>("cancel_button");
cancel_button.on_click = [this](auto) {
done(ExecCancel);
};
set_font(current_font);
}
FontPicker::~FontPicker()
{
}
void FontPicker::set_font(const Gfx::Font* font)
{
if (m_font == font)
return;
m_font = font;
m_sample_text_label->set_font(m_font);
if (!m_font) {
m_family = {};
m_weight = {};
m_size = {};
m_weights.clear();
m_sizes.clear();
m_weight_list_view->model()->update();
m_size_list_view->model()->update();
return;
}
m_family = font->family();
m_weight = font->weight();
m_size = font->presentation_size();
size_t family_index = m_families.find_first_index(m_font->family()).value();
m_family_list_view->set_cursor(m_family_list_view->model()->index(family_index), GUI::AbstractView::SelectionUpdate::Set);
size_t weight_index = m_weights.find_first_index(m_font->weight()).value();
m_weight_list_view->set_cursor(m_weight_list_view->model()->index(weight_index), GUI::AbstractView::SelectionUpdate::Set);
size_t size_index = m_sizes.find_first_index(m_font->presentation_size()).value();
m_size_list_view->set_cursor(m_size_list_view->model()->index(size_index), GUI::AbstractView::SelectionUpdate::Set);
}
void FontPicker::update_font()
{
if (m_family.has_value() && m_size.has_value() && m_weight.has_value()) {
m_font = Gfx::FontDatabase::the().get(m_family.value(), m_size.value(), m_weight.value());
m_sample_text_label->set_font(m_font);
}
}
}