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https://github.com/libretro/scummvm.git
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360 lines
10 KiB
C++
360 lines
10 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002-2006 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*/
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#include "common/stdafx.h"
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#include "common/util.h"
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#include "graphics/fontman.h"
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#include "gui/widget.h"
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#include "gui/dialog.h"
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#include "gui/eval.h"
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#include "gui/newgui.h"
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namespace GUI {
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Widget::Widget(GuiObject *boss, int x, int y, int w, int h)
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: GuiObject(x, y, w, h), _type(0), _boss(boss),
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_id(0), _flags(0), _hints(THEME_HINT_FIRST_DRAW), _hasFocus(false) {
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init();
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}
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Widget::Widget(GuiObject *boss, String name)
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: GuiObject(name), _type(0), _boss(boss),
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_id(0), _flags(0), _hints(THEME_HINT_FIRST_DRAW), _hasFocus(false) {
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init();
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}
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void Widget::init() {
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// Insert into the widget list of the boss
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_next = _boss->_firstWidget;
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_boss->_firstWidget = this;
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// HACK: we enable background saving for all widgets by default for now
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_hints = THEME_HINT_FIRST_DRAW | THEME_HINT_SAVE_BACKGROUND;
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}
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void Widget::resize(int x, int y, int w, int h) {
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_x = x;
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_y = y;
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_w = w;
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_h = h;
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}
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Widget::~Widget() {
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delete _next;
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}
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void Widget::draw() {
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NewGui *gui = &g_gui;
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if (!isVisible() || !_boss->isVisible())
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return;
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int oldX = _x, oldY = _y;
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// Account for our relative position in the dialog
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_x = getAbsX();
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_y = getAbsY();
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// Clear background (unless alpha blending is enabled)
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//if (_flags & WIDGET_CLEARBG)
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// gui->fillRect(_x, _y, _w, _h, gui->_bgcolor);
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// Draw border
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if (_flags & WIDGET_BORDER) {
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gui->theme()->drawWidgetBackground(Common::Rect(_x, _y, _x+_w, _y+_h), _hints, Theme::kWidgetBackgroundBorder);
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_x += 4;
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_y += 4;
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_w -= 8;
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_h -= 8;
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}
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// Now perform the actual widget draw
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drawWidget((_flags & WIDGET_HILITED) ? true : false);
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// Restore x/y
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if (_flags & WIDGET_BORDER) {
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_x -= 4;
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_y -= 4;
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_w += 8;
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_h += 8;
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}
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_x = oldX;
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_y = oldY;
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// Draw all children
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Widget *w = _firstWidget;
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while (w) {
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w->draw();
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w = w->_next;
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}
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clearHints(THEME_HINT_FIRST_DRAW);
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}
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Widget *Widget::findWidgetInChain(Widget *w, int x, int y) {
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while (w) {
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// Stop as soon as we find a widget that contains the point (x,y)
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if (x >= w->_x && x < w->_x + w->_w && y >= w->_y && y < w->_y + w->_h)
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break;
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w = w->_next;
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}
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if (w)
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w = w->findWidget(x - w->_x, y - w->_y);
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return w;
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}
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Widget *Widget::findWidgetInChain(Widget *w, const char *name) {
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while (w) {
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if (w->_name == name) {
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return w;
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}
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w = w->_next;
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}
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return 0;
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}
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bool Widget::isVisible() const {
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if (g_gui.evaluator()->getVar(_name + ".visible") == 0)
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return false;
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return !(_flags & WIDGET_INVISIBLE);
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}
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#pragma mark -
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StaticTextWidget::StaticTextWidget(GuiObject *boss, int x, int y, int w, int h, const String &text, TextAlignment align)
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: Widget(boss, x, y, w, h), _align(align) {
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_ws = g_gui.getWidgetSize();
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_flags = WIDGET_ENABLED;
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_type = kStaticTextWidget;
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_label = text;
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}
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StaticTextWidget::StaticTextWidget(GuiObject *boss, String name, const String &text)
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: Widget(boss, name) {
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_ws = g_gui.getWidgetSize();
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_flags = WIDGET_ENABLED;
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_type = kStaticTextWidget;
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_label = text;
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_align = (Graphics::TextAlignment)g_gui.evaluator()->getVar(name + ".align");
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if (_align == EVAL_UNDEF_VAR)
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_align = kTextAlignLeft;
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}
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void StaticTextWidget::setValue(int value) {
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char buf[256];
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sprintf(buf, "%d", value);
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_label = buf;
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}
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void StaticTextWidget::setLabel(const String &label) {
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_label = label;
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// TODO: We should automatically redraw when the label is changed.
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// The following doesn't quite work when we are using tabs, plus it
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// is rather clumsy to force a full redraw for a single static text.
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// However, as long as we do blending, it might be the only way.
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//_boss->draw();
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}
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void StaticTextWidget::setAlign(TextAlignment align) {
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_align = align;
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// TODO: We should automatically redraw when the alignment is changed.
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// See setLabel() for more insights.
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}
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void StaticTextWidget::drawWidget(bool hilite) {
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g_gui.theme()->drawText(Common::Rect(_x, _y, _x+_w, _y+_h), _label,
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isEnabled() ? Theme::kStateEnabled : Theme::kStateDisabled,
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g_gui.theme()->convertAligment(_align));
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}
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void StaticTextWidget::handleScreenChanged() {
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Widget::handleScreenChanged();
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_ws = g_gui.getWidgetSize();
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}
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#pragma mark -
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ButtonWidget::ButtonWidget(GuiObject *boss, int x, int y, int w, int h, const String &label, uint32 cmd, uint8 hotkey, WidgetSize ws)
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: StaticTextWidget(boss, x, y, w, h, label, kTextAlignCenter), CommandSender(boss),
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_cmd(cmd), _hotkey(hotkey) {
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_flags = WIDGET_ENABLED/* | WIDGET_BORDER*/ | WIDGET_CLEARBG;
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_type = kButtonWidget;
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}
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ButtonWidget::ButtonWidget(GuiObject *boss, String name, const String &label, uint32 cmd, uint8 hotkey)
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: StaticTextWidget(boss, name, label), CommandSender(boss),
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_cmd(cmd), _hotkey(hotkey) {
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_flags = WIDGET_ENABLED/* | WIDGET_BORDER*/ | WIDGET_CLEARBG;
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_type = kButtonWidget;
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}
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void ButtonWidget::handleMouseUp(int x, int y, int button, int clickCount) {
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if (isEnabled() && x >= 0 && x < _w && y >= 0 && y < _h)
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sendCommand(_cmd, 0);
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}
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void ButtonWidget::drawWidget(bool hilite) {
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g_gui.theme()->drawButton(Common::Rect(_x, _y, _x+_w, _y+_h), _label, isEnabled() ? (hilite ? Theme::kStateHighlight : Theme::kStateEnabled) : Theme::kStateDisabled);
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}
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#pragma mark -
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CheckboxWidget::CheckboxWidget(GuiObject *boss, int x, int y, int w, int h, const String &label, uint32 cmd, uint8 hotkey, WidgetSize ws)
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: ButtonWidget(boss, x, y, w, h, label, cmd, hotkey, ws), _state(false) {
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_flags = WIDGET_ENABLED;
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_type = kCheckboxWidget;
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}
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CheckboxWidget::CheckboxWidget(GuiObject *boss, String name, const String &label, uint32 cmd, uint8 hotkey)
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: ButtonWidget(boss, name, label, cmd, hotkey), _state(false) {
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_flags = WIDGET_ENABLED;
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_type = kCheckboxWidget;
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}
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void CheckboxWidget::handleMouseUp(int x, int y, int button, int clickCount) {
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if (isEnabled() && x >= 0 && x < _w && y >= 0 && y < _h) {
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toggleState();
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}
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}
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void CheckboxWidget::setState(bool state) {
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if (_state != state) {
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_state = state;
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_flags ^= WIDGET_INV_BORDER;
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draw();
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}
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sendCommand(_cmd, _state);
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}
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void CheckboxWidget::drawWidget(bool hilite) {
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g_gui.theme()->drawCheckbox(Common::Rect(_x, _y, _x+_w, _y+_h), _label, _state,
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isEnabled() ? (hilite ? Theme::kStateHighlight : Theme::kStateEnabled) : Theme::kStateDisabled);
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}
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#pragma mark -
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SliderWidget::SliderWidget(GuiObject *boss, int x, int y, int w, int h, uint32 cmd)
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: Widget(boss, x, y, w, h), CommandSender(boss),
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_cmd(cmd), _value(0), _oldValue(0), _valueMin(0), _valueMax(100), _isDragging(false) {
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_flags = WIDGET_ENABLED | WIDGET_TRACK_MOUSE | WIDGET_CLEARBG;
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_type = kSliderWidget;
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}
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SliderWidget::SliderWidget(GuiObject *boss, String name, uint32 cmd)
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: Widget(boss, name), CommandSender(boss),
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_cmd(cmd), _value(0), _oldValue(0), _valueMin(0), _valueMax(100), _isDragging(false) {
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_flags = WIDGET_ENABLED | WIDGET_TRACK_MOUSE | WIDGET_CLEARBG;
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_type = kSliderWidget;
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}
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void SliderWidget::handleMouseMoved(int x, int y, int button) {
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if (isEnabled() && _isDragging && x >= 0) {
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int newValue = posToValue(x);
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if (newValue < _valueMin)
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newValue = _valueMin;
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else if (newValue > _valueMax)
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newValue = _valueMax;
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if (newValue != _value) {
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_value = newValue;
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draw();
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sendCommand(_cmd, _value); // FIXME - hack to allow for "live update" in sound dialog
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}
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}
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}
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void SliderWidget::handleMouseDown(int x, int y, int button, int clickCount) {
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if (isEnabled()) {
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_isDragging = true;
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handleMouseMoved(x, y, button);
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}
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}
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void SliderWidget::handleMouseUp(int x, int y, int button, int clickCount) {
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if (isEnabled() && _isDragging) {
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sendCommand(_cmd, _value);
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}
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_isDragging = false;
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}
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void SliderWidget::drawWidget(bool hilite) {
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g_gui.theme()->drawSlider(Common::Rect(_x, _y, _x+_w, _y+_h), valueToPos(_value),
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isEnabled() ? (hilite ? Theme::kStateHighlight : Theme::kStateEnabled) : Theme::kStateDisabled);
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}
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int SliderWidget::valueToPos(int value) {
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return ((_w - 4) * (value - _valueMin) / (_valueMax - _valueMin));
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}
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int SliderWidget::posToValue(int pos) {
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return (pos) * (_valueMax - _valueMin) / (_w - 4) + _valueMin;
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}
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#pragma mark -
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GraphicsWidget::GraphicsWidget(GuiObject *boss, int x, int y, int w, int h)
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: Widget(boss, x, y, w, h), _gfx(), _transparency(false) {
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_flags = WIDGET_ENABLED | WIDGET_CLEARBG;
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_type = kGraphicsWidget;
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// HACK: Don't save the background. We want to be sure that redrawing
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// the widget updates the screen, even when there isn't any image
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// to draw.
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_hints &= ~THEME_HINT_SAVE_BACKGROUND;
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}
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GraphicsWidget::GraphicsWidget(GuiObject *boss, String name)
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: Widget(boss, name), _gfx(), _transparency(false) {
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_flags = WIDGET_ENABLED | WIDGET_CLEARBG;
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_type = kGraphicsWidget;
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// HACK: Don't save the background. We want to be sure that redrawing
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// the widget updates the screen, even when there isn't any image
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// to draw.
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_hints &= ~THEME_HINT_SAVE_BACKGROUND;
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}
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GraphicsWidget::~GraphicsWidget() {
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_gfx.free();
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}
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void GraphicsWidget::setGfx(const Graphics::Surface *gfx) {
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_gfx.free();
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if (!gfx || !gfx->pixels)
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return;
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// TODO: add conversion to OverlayColor
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_gfx.create(gfx->w, gfx->h, gfx->bytesPerPixel);
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memcpy(_gfx.pixels, gfx->pixels, gfx->h * gfx->pitch);
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}
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void GraphicsWidget::drawWidget(bool hilite) {
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if (sizeof(OverlayColor) == _gfx.bytesPerPixel && _gfx.pixels) {
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g_gui.theme()->drawSurface(Common::Rect(_x, _y, _x+_w, _y+_h), _gfx, Theme::kStateEnabled, _transparency);
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}
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}
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} // End of namespace GUI
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