mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-15 20:50:28 +00:00
655 lines
12 KiB
C++
655 lines
12 KiB
C++
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "ui_widget.hpp"
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#include "ui_painter.hpp"
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#include <cstdint>
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#include <cstddef>
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#include <algorithm>
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#include "string_format.hpp"
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namespace ui {
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static bool ui_dirty = true;
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void dirty_set() {
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ui_dirty = true;
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}
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void dirty_clear() {
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ui_dirty = false;
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}
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bool is_dirty() {
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return ui_dirty;
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}
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/* Widget ****************************************************************/
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const std::vector<Widget*> Widget::no_children { };
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Point Widget::screen_pos() {
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return screen_rect().pos;
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}
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Size Widget::size() const {
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return parent_rect.size;
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}
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Rect Widget::screen_rect() const {
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return parent() ? (parent_rect + parent()->screen_pos()) : parent_rect;
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}
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void Widget::set_parent_rect(const Rect new_parent_rect) {
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parent_rect = new_parent_rect;
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set_dirty();
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}
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Widget* Widget::parent() const {
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return parent_;
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}
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void Widget::set_parent(Widget* const widget) {
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if( parent_ && !widget ) {
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// We have a parent, but are losing it. Update visible status.
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visible(false);
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}
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parent_ = widget;
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}
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void Widget::set_dirty() {
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flags.dirty = true;
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dirty_set();
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}
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bool Widget::dirty() const {
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return flags.dirty;
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}
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void Widget::set_clean() {
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flags.dirty = false;
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}
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void Widget::hidden(bool hide) {
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if( hide != flags.hidden ) {
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flags.hidden = hide;
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// If parent is hidden, either of these is a no-op.
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if( hide ) {
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// TODO: Instead of dirtying parent entirely, dirty only children
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// that overlap with this widget.
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parent()->dirty_overlapping_children_in_rect(parent_rect);
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/* TODO: Notify self and all non-hidden children that they're
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* now effectively hidden?
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*/
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} else {
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set_dirty();
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/* TODO: Notify self and all non-hidden children that they're
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* now effectively shown?
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*/
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}
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}
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}
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void Widget::focus() {
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context().focus_manager().set_focus_widget(this);
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}
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void Widget::on_focus() {
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//set_dirty();
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}
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void Widget::blur() {
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context().focus_manager().set_focus_widget(nullptr);
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}
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void Widget::on_blur() {
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//set_dirty();
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}
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bool Widget::focusable() const {
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return flags.focusable;
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}
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void Widget::set_focusable(const bool value) {
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flags.focusable = value;
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}
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bool Widget::has_focus() {
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return (context().focus_manager().focus_widget() == this);
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}
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bool Widget::on_key(const KeyEvent event) {
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(void)event;
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return false;
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}
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bool Widget::on_encoder(const EncoderEvent event) {
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(void)event;
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return false;
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}
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bool Widget::on_touch(const TouchEvent event) {
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(void)event;
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return false;
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}
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const std::vector<Widget*>& Widget::children() const {
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return no_children;
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}
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Context& Widget::context() const {
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return parent()->context();
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}
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void Widget::set_style(const Style* new_style) {
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if( new_style != style_ ) {
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style_ = new_style;
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set_dirty();
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}
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}
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const Style& Widget::style() const {
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return style_ ? *style_ : parent()->style();
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}
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void Widget::visible(bool v) {
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if( v != flags.visible ) {
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flags.visible = v;
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/* TODO: This on_show/on_hide implementation seems inelegant.
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* But I need *some* way to take/configure resources when
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* a widget becomes visible, and reverse the process when the
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* widget becomes invisible, whether the widget (or parent) is
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* hidden, or the widget (or parent) is removed from the tree.
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*/
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if( v ) {
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on_show();
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} else {
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on_hide();
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// Set all children invisible too.
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for(const auto child : children()) {
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child->visible(false);
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}
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}
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}
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}
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bool Widget::highlighted() const {
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return flags.highlighted;
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}
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void Widget::set_highlighted(const bool value) {
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flags.highlighted = value;
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}
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void Widget::dirty_overlapping_children_in_rect(const Rect& child_rect) {
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for(auto child : children()) {
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if( !child_rect.intersect(child->parent_rect).is_empty() ) {
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child->set_dirty();
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}
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}
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}
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/* View ******************************************************************/
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void View::paint(Painter& painter) {
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painter.fill_rectangle(
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screen_rect(),
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style().background
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);
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}
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void View::add_child(Widget* const widget) {
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if( widget ) {
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if( widget->parent() == nullptr ) {
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widget->set_parent(this);
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children_.push_back(widget);
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widget->set_dirty();
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}
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}
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}
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void View::add_children(const std::vector<Widget*>& children) {
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for(auto child : children) {
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add_child(child);
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}
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}
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void View::remove_child(Widget* const widget) {
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if( widget ) {
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children_.erase(std::remove(children_.begin(), children_.end(), widget), children_.end());
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dirty_overlapping_children_in_rect(widget->screen_rect());
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widget->set_parent(nullptr);
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}
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}
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const std::vector<Widget*>& View::children() const {
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return children_;
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}
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std::string View::title() const {
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return "";
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};
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/* Rectangle *************************************************************/
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Rectangle::Rectangle(
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Color c
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) : Widget { },
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color { c }
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{
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}
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Rectangle::Rectangle(
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Rect parent_rect,
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Color c
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) : Widget { parent_rect },
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color { c }
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{
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}
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void Rectangle::set_color(const Color c) {
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color = c;
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set_dirty();
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}
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void Rectangle::paint(Painter& painter) {
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painter.fill_rectangle(
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screen_rect(),
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color
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);
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}
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/* Text ******************************************************************/
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Text::Text(
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Rect parent_rect,
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std::string text
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) : Widget { parent_rect },
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text { text }
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{
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}
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Text::Text(
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Rect parent_rect
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) : Text { parent_rect, { } }
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{
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}
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void Text::set(const std::string value) {
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text = value;
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set_dirty();
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}
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void Text::paint(Painter& painter) {
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const auto rect = screen_rect();
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const auto s = style();
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painter.fill_rectangle(rect, s.background);
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painter.draw_string(
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rect.pos,
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s,
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text
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);
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}
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/* Button ****************************************************************/
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Button::Button(
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Rect parent_rect,
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std::string text
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) : Widget { parent_rect },
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text_ { text }
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{
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set_focusable(true);
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}
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void Button::set_text(const std::string value) {
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text_ = value;
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set_dirty();
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}
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std::string Button::text() const {
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return text_;
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}
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void Button::paint(Painter& painter) {
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const auto r = screen_rect();
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const auto paint_style = (has_focus() || highlighted()) ? style().invert() : style();
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painter.draw_rectangle(r, style().foreground);
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painter.fill_rectangle(
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{ r.pos.x + 1, r.pos.y + 1, r.size.w - 2, r.size.h - 2 },
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paint_style.background
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);
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const auto label_r = paint_style.font.size_of(text_);
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painter.draw_string(
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{ r.pos.x + (r.size.w - label_r.w) / 2, r.pos.y + (r.size.h - label_r.h) / 2 },
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paint_style,
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text_
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);
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}
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bool Button::on_key(const KeyEvent key) {
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if( key == KeyEvent::Select ) {
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if( on_select ) {
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on_select(*this);
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return true;
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}
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}
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return false;
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}
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bool Button::on_touch(const TouchEvent event) {
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switch(event.type) {
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case TouchEvent::Type::Start:
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set_highlighted(true);
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set_dirty();
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return true;
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case TouchEvent::Type::End:
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set_highlighted(false);
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set_dirty();
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if( on_select ) {
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on_select(*this);
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}
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return true;
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default:
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return false;
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}
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#if 0
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switch(event.type) {
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case TouchEvent::Type::Start:
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flags.highlighted = true;
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set_dirty();
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return true;
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case TouchEvent::Type::Move:
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{
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const bool new_highlighted = screen_rect().contains(event.point);
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if( flags.highlighted != new_highlighted ) {
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flags.highlighted = new_highlighted;
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set_dirty();
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}
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}
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return true;
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case TouchEvent::Type::End:
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if( flags.highlighted ) {
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flags.highlighted = false;
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set_dirty();
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if( on_select ) {
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on_select(*this);
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}
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}
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return true;
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default:
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return false;
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}
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#endif
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}
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/* Image *****************************************************************/
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Image::Image(
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) : Image { { }, nullptr, Color::white(), Color::black() }
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{
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}
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Image::Image(
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const Rect parent_rect,
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const Bitmap* bitmap,
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const Color foreground,
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const Color background
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) : Widget { parent_rect },
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bitmap_ { bitmap },
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foreground_ { foreground },
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background_ { background }
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{
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}
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void Image::set_bitmap(const Bitmap* bitmap) {
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bitmap_ = bitmap;
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set_dirty();
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}
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void Image::set_foreground(const Color color) {
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foreground_ = color;
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set_dirty();
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}
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void Image::set_background(const Color color) {
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background_ = color;
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set_dirty();
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}
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void Image::paint(Painter& painter) {
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if( bitmap_ ) {
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// Code also handles ImageButton behavior.
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const bool selected = (has_focus() || highlighted());
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painter.draw_bitmap(
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screen_pos(),
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*bitmap_,
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selected ? background_ : foreground_,
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selected ? foreground_ : background_
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);
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}
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}
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/* ImageButton ***********************************************************/
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// TODO: Virtually all this code is duplicated from Button. Base class?
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ImageButton::ImageButton(
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const Rect parent_rect,
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const Bitmap* bitmap,
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const Color foreground,
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const Color background
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) : Image { parent_rect, bitmap, foreground, background }
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{
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set_focusable(true);
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}
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bool ImageButton::on_key(const KeyEvent key) {
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if( key == KeyEvent::Select ) {
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if( on_select ) {
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on_select(*this);
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return true;
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}
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}
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return false;
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}
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bool ImageButton::on_touch(const TouchEvent event) {
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switch(event.type) {
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case TouchEvent::Type::Start:
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set_highlighted(true);
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set_dirty();
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return true;
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case TouchEvent::Type::End:
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set_highlighted(false);
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set_dirty();
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if( on_select ) {
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on_select(*this);
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}
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return true;
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default:
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return false;
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}
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}
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/* OptionsField **********************************************************/
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OptionsField::OptionsField(
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Point parent_pos,
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size_t length,
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options_t options
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) : Widget { { parent_pos, { static_cast<ui::Dim>(8 * length), 16 } } },
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length_ { length },
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options { options }
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{
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set_focusable(true);
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}
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size_t OptionsField::selected_index() const {
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return selected_index_;
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}
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void OptionsField::set_selected_index(const size_t new_index) {
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if( new_index < options.size() ) {
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if( new_index != selected_index() ) {
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selected_index_ = new_index;
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if( on_change ) {
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on_change(selected_index(), options[selected_index()].second);
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}
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set_dirty();
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}
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}
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}
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void OptionsField::set_by_value(value_t v) {
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size_t new_index { 0 };
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for(const auto& option : options) {
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if( option.second == v ) {
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set_selected_index(new_index);
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break;
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}
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new_index++;
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}
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}
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void OptionsField::paint(Painter& painter) {
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const auto paint_style = has_focus() ? style().invert() : style();
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if( selected_index() < options.size() ) {
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const auto text = options[selected_index()].first;
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painter.draw_string(
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screen_pos(),
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paint_style,
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text
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);
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}
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}
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void OptionsField::on_focus() {
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if( on_show_options ) {
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on_show_options();
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}
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}
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bool OptionsField::on_encoder(const EncoderEvent delta) {
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set_selected_index(selected_index() + delta);
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return true;
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}
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bool OptionsField::on_touch(const TouchEvent event) {
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if( event.type == TouchEvent::Type::Start ) {
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focus();
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}
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return true;
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}
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/* NumberField ***********************************************************/
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NumberField::NumberField(
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Point parent_pos,
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size_t length,
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range_t range,
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int32_t step,
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char fill_char
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) : Widget { { parent_pos, { static_cast<ui::Dim>(8 * length), 16 } } },
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range { range },
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step { step },
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length_ { length },
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fill_char { fill_char }
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{
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set_focusable(true);
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}
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int32_t NumberField::value() const {
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return value_;
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}
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void NumberField::set_value(int32_t new_value) {
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new_value = clip_value(new_value);
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if( new_value != value() ) {
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value_ = new_value;
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if( on_change ) {
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on_change(value_);
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}
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set_dirty();
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}
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}
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void NumberField::paint(Painter& painter) {
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const auto text = to_string_dec_int(value_, length_, fill_char);
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const auto paint_style = has_focus() ? style().invert() : style();
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painter.draw_string(
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screen_pos(),
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paint_style,
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text
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);
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}
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bool NumberField::on_encoder(const EncoderEvent delta) {
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set_value(value() + (delta * step));
|
|
return true;
|
|
}
|
|
|
|
bool NumberField::on_touch(const TouchEvent event) {
|
|
if( event.type == TouchEvent::Type::Start ) {
|
|
focus();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
int32_t NumberField::clip_value(int32_t value) {
|
|
if( value > range.second ) {
|
|
value = range.second;
|
|
}
|
|
if( value < range.first ) {
|
|
value = range.first;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
} /* namespace ui */
|