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gui/message.cpp
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286
gui/message.cpp
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/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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 3 of the License, or
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* (at your option) 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. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/str.h"
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#include "common/system.h"
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#include "common/translation.h"
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#include "gui/message.h"
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#include "gui/gui-manager.h"
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#include "gui/ThemeEval.h"
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#include "gui/widget.h"
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namespace GUI {
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enum {
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kDefaultCmd = 'DFLT',
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kAltCmd = 'ALTC'
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};
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// TODO: The default button should be visibly distinct from the alternate button
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void MessageDialog::init(const Common::U32String &message,
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const Common::U32String &defaultButton,
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const Common::U32StringArray &altButtons,
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Graphics::TextAlign alignment,
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const char *url,
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const Common::U32String &extraMessage) {
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// message widgets will be created in reflowLayout as needed
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_message = message;
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_alignment = alignment;
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_url = url;
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_extraMessage = nullptr;
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// Only use bogus sizes, we do the calculation in reflowLayout
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if (!defaultButton.empty()) {
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// Confirm dialog
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_buttons.push_back(new ButtonWidget(this, 0, 0, 0, 0, defaultButton, Common::U32String(), kDefaultCmd, Common::ASCII_RETURN));
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}
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int buttonHotKey = altButtons.size() == 1 ? Common::ASCII_ESCAPE : 0;
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for (size_t i = 0, total = altButtons.size(); i < total; ++i) {
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_buttons.push_back(new ButtonWidget(this, 0, 0, 0, 0, altButtons[i], Common::U32String(), kAltCmd + i, buttonHotKey));
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buttonHotKey = 0;
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}
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if (!extraMessage.empty()) {
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_extraMessage = new StaticTextWidget(this, 0, 0, 0, 0, extraMessage, Graphics::kTextAlignLeft);
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}
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}
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void MessageDialog::reflowLayout() {
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const int horizontalMargin = 10;
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const int buttonSpacing = 10;
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int16 screenW, screenH;
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const Common::Rect safeArea = g_system->getSafeOverlayArea(&screenW, &screenH);
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int buttonWidth = g_gui.xmlEval()->getVar("Globals.Button.Width", 0);
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int buttonHeight = g_gui.xmlEval()->getVar("Globals.Button.Height", 0);
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// First, determine the size the dialog needs. For this we have to break
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// down the string into lines, and taking the maximum of their widths.
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// Using this, and accounting for the space the button(s) need, we can set
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// the real size of the dialog
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Common::Array<Common::U32String> lines;
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size_t lineCount;
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int maxlineWidth = g_gui.getFont().wordWrapText(_message, safeArea.width() - 2 * horizontalMargin - 20, lines);
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const size_t buttonCount = _buttons.size();
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const int buttonsTotalWidth = buttonCount * buttonWidth + (buttonCount - 1) * buttonSpacing;
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// Calculate the desired dialog size
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_w = MAX(maxlineWidth, buttonsTotalWidth) + 2 * horizontalMargin;
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lineCount = lines.size();
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_h = 16;
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if (buttonCount)
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_h += buttonHeight + 8;
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if (_extraMessage)
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_h += kLineHeight;
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// Limit the number of lines so that the dialog still fits on the screen.
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lineCount = MIN(lineCount, (size_t)((safeArea.height() - 20 - _h) / kLineHeight));
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_h += lineCount * kLineHeight;
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// Center the dialog
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_x = (screenW - _w) / 2;
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_y = (screenH - _h) / 2;
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safeArea.constrain(_x, _y, _w, _h);
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int curY = 10;
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// Each line is represented by one static text item.
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// Update existing lines
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size_t toUpdateLines = MIN<size_t>(lineCount, _lines.size());
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for (size_t i = 0; i < toUpdateLines; i++) {
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_lines[i]->setPos(horizontalMargin, curY);
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_lines[i]->setSize(maxlineWidth, kLineHeight);
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_lines[i]->setLabel(lines[i]);
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curY += kLineHeight;
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}
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// Create missing lines
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for (size_t i = toUpdateLines; i < lineCount; i++) {
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_lines.push_back(new StaticTextWidget(this, horizontalMargin, curY, maxlineWidth, kLineHeight, lines[i], _alignment));
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curY += kLineHeight;
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}
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// Cleanup old useless lines
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for (size_t i = lineCount, total = _lines.size(); i < total; i++) {
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this->removeWidget(_lines[i]);
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delete _lines[i];
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}
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_lines.resize(lineCount);
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if (buttonCount) {
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curY += 8;
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int buttonPos = (_w - buttonsTotalWidth) / 2;
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for (size_t i = 0; i < buttonCount; ++i) {
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_buttons[i]->setPos(buttonPos, curY);
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_buttons[i]->setSize(buttonWidth, buttonHeight);
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buttonPos += buttonWidth + buttonSpacing;
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}
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curY += buttonHeight;
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}
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curY += 6;
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if (_extraMessage) {
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_extraMessage->setPos(10, curY);
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_extraMessage->setSize(maxlineWidth, kLineHeight);
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}
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}
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MessageDialog::MessageDialog(const Common::U32String &message)
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: MessageDialog(message, _("OK")) {
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}
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MessageDialog::MessageDialog(const Common::String &message)
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: MessageDialog(Common::U32String(message), _("OK")) {
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}
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MessageDialog::MessageDialog(const Common::U32String &message,
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const Common::U32String &defaultButton,
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const Common::U32String &altButton,
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Graphics::TextAlign alignment,
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const char *url,
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const Common::U32String &extraMessage)
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: Dialog(30, 20, 260, 124) {
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init(message, defaultButton,
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altButton.empty() ? Common::U32StringArray() : Common::U32StringArray(1, altButton),
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alignment, url, extraMessage);
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}
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MessageDialog::MessageDialog(const Common::String &message,
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const Common::String &defaultButton,
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const Common::String &altButton,
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Graphics::TextAlign alignment,
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const char *url)
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: Dialog(30, 20, 260, 124) {
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init(Common::U32String(message), Common::U32String(defaultButton),
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altButton.empty() ? Common::U32StringArray() : Common::U32StringArray(1, Common::U32String(altButton)),
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alignment, url, Common::U32String());
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}
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MessageDialog::MessageDialog(const Common::U32String &message,
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const Common::U32String &defaultButton,
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const Common::U32StringArray &altButtons,
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Graphics::TextAlign alignment)
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: Dialog(30, 20, 260, 124) {
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init(message, defaultButton, altButtons, alignment, nullptr, Common::U32String());
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}
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void MessageDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
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if (cmd == kDefaultCmd) {
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setResult(kMessageOK);
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close();
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return;
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}
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if (cmd >= kAltCmd) {
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if (_url) {
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if (g_system->hasFeature(OSystem::kFeatureOpenUrl))
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g_system->openUrl(_url);
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setResult(kMessageOK);
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} else {
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setResult(kMessageAlt + cmd - kAltCmd);
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}
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close();
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} else {
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Dialog::handleCommand(sender, cmd, data);
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}
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}
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TimedMessageDialog::TimedMessageDialog(const Common::U32String &message, uint32 duration)
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: MessageDialog(message, Common::U32String(), Common::U32String()) {
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_timer = g_system->getMillis() + duration;
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}
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void TimedMessageDialog::handleTickle() {
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MessageDialog::handleTickle();
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if (g_system->getMillis() > _timer)
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close();
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}
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CountdownMessageDialog::CountdownMessageDialog(const Common::U32String &message,
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uint32 duration)
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: CountdownMessageDialog(message, duration, _("OK")) {
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}
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CountdownMessageDialog::CountdownMessageDialog(const Common::U32String &message,
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uint32 duration,
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const Common::U32String &defaultButton,
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const Common::U32String &altButton,
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Graphics::TextAlign alignment,
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const Common::U32String &countdownMessage)
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: MessageDialog(message, defaultButton, altButton, alignment, nullptr, countdownMessage) {
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_startTime = g_system->getMillis();
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_timer = _startTime + duration;
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_countdownMessage = countdownMessage;
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updateCountdown();
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}
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void CountdownMessageDialog::handleTickle() {
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updateCountdown();
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MessageDialog::handleTickle();
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if (g_system->getMillis() > _timer) {
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setResult(kMessageAlt);
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close();
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}
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}
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void CountdownMessageDialog::updateCountdown() {
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uint32 secs = (_timer - g_system->getMillis()) / 1000;
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Common::U32String msg = Common::U32String::format(_countdownMessage, secs);
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if (msg != _extraMessage->getLabel()) {
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_extraMessage->setLabel(msg);
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}
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}
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MessageDialogWithURL::MessageDialogWithURL(const Common::U32String &message, const char *url)
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: MessageDialogWithURL(message, url, _("OK")) {
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}
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MessageDialogWithURL::MessageDialogWithURL(const Common::String &message, const char *url)
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: MessageDialogWithURL(Common::U32String(message), url, _("OK")) {
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}
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MessageDialogWithURL::MessageDialogWithURL(const Common::U32String &message, const char *url, const Common::U32String &defaultButton, Graphics::TextAlign alignment)
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: MessageDialog(message, defaultButton, _("Open URL"), alignment, url) {
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}
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MessageDialogWithURL::MessageDialogWithURL(const Common::String &message, const char *url, const char *defaultButton, Graphics::TextAlign alignment)
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: MessageDialog(Common::U32String(message), Common::U32String(defaultButton), _("Open URL"), alignment, url) {
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}
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} // End of namespace GUI
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