added PopUpWidget; hacked it into the edit game dialog just to show how to use it; note: this is NOT finished by any means, the look will change, the code will change, this is just an early preview :-)

svn-id: r5914

1 files changed, 262 insertions, 0 deletions

diff --git a/gui/PopUpWidget.cpp b/gui/PopUpWidget.cpp
new file mode 100644
index 0000000000..966f3cc463
--- /dev/null
+++ b/gui/PopUpWidget.cpp
@@ -0,0 +1,262 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002 The ScummVM project
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ */
+
+#include "stdafx.h"
+#include "PopUpWidget.h"
+#include "dialog.h"
+#include "newgui.h"
+
+/* TODO:
+ * - draw an (unselectable) sepeator line for items that start with a '-'
+ * - handle looong lists by allowing scrolling (a lot of work if done right, 
+ *   so I will probably only implement if we really need it)
+ * - ...
+ */
+
+#define UP_DOWN_BOX_HEIGHT	10
+
+// Down arrow
+static uint32 down_arrow[8] = {
+	0x00000000,
+	0x00000000,
+	0x00100010,
+	0x00110110,
+	0x00011100,
+	0x00011100,
+	0x00001000,
+	0x00001000,
+};
+
+const ScummVM::String PopUpWidget::emptyStr;
+
+class PopUpDialog : public Dialog {
+protected:
+	PopUpWidget	*_popUpBoss;
+	int			_clickX, _clickY;
+	byte		*_buffer;
+	int			_selection;
+public:
+	PopUpDialog(PopUpWidget *boss, int clickX, int clickY);
+	
+	void drawDialog();
+
+	void handleMouseDown(int x, int y, int button, int clickCount);
+	void handleMouseUp(int x, int y, int button, int clickCount);
+//	void handleMouseWheel(int x, int y, int direction);	// Scroll through entries with scroll wheel
+	void handleMouseMoved(int x, int y, int button);	// Redraw selections depending on mouse position
+//	bool handleKeyDown(uint16 ascii, int keycode, int modifiers);	// Scroll through entries with arrow keys etc.
+//	void handleCommand(CommandSender *sender, uint32 cmd, uint32 data);
+
+protected:
+//	void backupMenuBackground();
+//	void restoreMenuBackground();
+	
+	void drawMenuEntry(int entry, bool hilite);
+	
+	int findItem(int x, int y) const;
+};
+
+PopUpDialog::PopUpDialog(PopUpWidget *boss, int clickX, int clickY)
+	: Dialog(boss->_boss->getGui(), 0, 0, 16, 16),
+	_popUpBoss(boss)
+{
+	// Calculate real popup dimensions
+	_x = _popUpBoss->_boss->getX() + _popUpBoss->_x;
+	_y = _popUpBoss->_boss->getY() + _popUpBoss->_y - _popUpBoss->_selectedItem * kLineHeight;
+	_h = _popUpBoss->_entries.size() * kLineHeight + 2;
+	_w = _popUpBoss->_w;
+	
+	// Copy the selection index
+	_selection = _popUpBoss->_selectedItem;
+	
+	// TODO - perform clipping / switch to scrolling mode if we don't fit on the screen
+	
+	// TODO - backup background here
+
+	// Remember original mouse position
+	_clickX = clickX - _x;
+	_clickY = clickY - _y;
+}
+
+void PopUpDialog::drawDialog()
+{
+	// Draw the menu border
+	_gui->box(_x, _y, _w, _h);
+
+	// Draw the entries
+	int count = _popUpBoss->_entries.size();
+	for (int i = 0; i < count; i++) {
+		drawMenuEntry(i, i == _selection);
+	}
+
+	_gui->addDirtyRect(_x, _y, _w, _h);
+}
+
+void PopUpDialog::handleMouseDown(int x, int y, int button, int clickCount)
+{
+}
+
+
+void PopUpDialog::handleMouseUp(int x, int y, int button, int clickCount)
+{
+	// Mouse was released. If it wasn't moved much since the original mouse down, 
+	// let the popup stay open. If it did move, assume the user made his selection.
+	int dist = (_clickX - x) * (_clickX - x) + (_clickY - y) * (_clickY - y);
+	if (dist > 3*3) {
+		setResult(_selection);
+		close();
+	}
+	_clickX = -1;
+	_clickY = -1;
+}
+
+void PopUpDialog::handleMouseMoved(int x, int y, int button)
+{
+	// Compute over which item
+	int item = findItem(x, y);
+	if (item != _selection) {
+		// Undraw old selection
+		if (_selection >= 0)
+			drawMenuEntry(_selection, false);
+
+		// Change selection
+		_selection = item;
+
+		// Draw new selection
+		if (item >= 0)
+			drawMenuEntry(item, true);
+	}
+}
+
+int PopUpDialog::findItem(int x, int y) const
+{
+	if (x >= 0 && x < _w && y >= 0 && y < _h) {
+		return (y-2) / kLineHeight;
+	}
+	return _popUpBoss->_selectedItem;
+}
+
+/*
+void PopUpWidget::backupMenuBackground()
+{
+	NewGui	*gui = _boss->getGui();
+
+	assert(_menu.buffer);
+	gui->blitToBuffer(_menu.x1, _menu.y1, _menu.w, _menu.h, _menu.buffer, _menu.w * 2);
+}
+
+void PopUpWidget::restoreMenuBackground()
+{
+	NewGui	*gui = _boss->getGui();
+
+	assert(_menu.buffer);
+	gui->blitFromBuffer(_menu.x1, _menu.y1, _menu.w, _menu.h, _menu.buffer, _menu.w * 2);
+	gui->addDirtyRect(_menu.x1, _menu.y1, _menu.w, _menu.h);
+	draw();
+}
+*/
+
+void PopUpDialog::drawMenuEntry(int entry, bool hilite)
+{
+	// Draw one entry of the popup menu, including selection
+	assert(entry >= 0);
+	int x = _x + 2;
+	int y = _y + 2 + kLineHeight * entry;
+	int w = _w - 4;
+
+	_gui->fillRect(x, y, w, kLineHeight,
+						hilite ? _gui->_textcolorhi : _gui->_bgcolor);
+	_gui->drawString(_popUpBoss->_entries[entry].name, x+1, y+1, w-2,
+						hilite ? _gui->_bgcolor : _gui->_textcolor);
+	_gui->addDirtyRect(x, y, w, kLineHeight);
+}
+
+//
+//
+//
+//
+//
+
+
+PopUpWidget::PopUpWidget(Dialog *boss, int x, int y, int w, int h)
+	: Widget(boss, x, y-1, w, h+2), CommandSender(boss)
+{
+	_flags = WIDGET_ENABLED | WIDGET_CLEARBG | WIDGET_RETAIN_FOCUS;
+	_type = 'POPU';
+
+	_selectedItem = -1;
+}
+
+void PopUpWidget::handleMouseDown(int x, int y, int button, int clickCount)
+{
+	PopUpDialog popupDialog(this, x + _x + _boss->getX(), y + _y + _boss->getY());
+	int newSel = popupDialog.runModal();
+	if (newSel != -1 && _selectedItem != newSel) {
+		_selectedItem = newSel;
+		sendCommand(kPopUpItemSelectedCmd, _selectedItem);
+	}
+}
+
+void PopUpWidget::appendEntry(const String &entry, uint32 tag)
+{
+	Entry e;
+	e.name = entry;
+	e.tag = tag;
+	_entries.push_back(e);
+}
+
+void PopUpWidget::clearEntries()
+{
+	_entries.clear();
+	_selectedItem = -1;
+}
+
+void PopUpWidget::setSelected(int item)
+{
+	// FIXME
+	if (item != _selectedItem) {
+		if (item >= 0 && item < _entries.size()) {
+			_selectedItem = item;
+		} else {
+			_selectedItem = -1;
+		}
+	}
+}
+
+void PopUpWidget::drawWidget(bool hilite)
+{
+	NewGui	*gui = _boss->getGui();
+
+	// Draw a thin frame around us.
+	// TODO - should look different than the EditTextWidget fram
+	gui->hline(_x, _y, _x+_w-1, gui->_color);
+	gui->hline(_x, _y+_h-1, _x+_w-1, gui->_shadowcolor);
+	gui->vline(_x, _y, _y+_h-1, gui->_color);
+	gui->vline(_x+_w-1, _y, _y+_h-1, gui->_shadowcolor);
+	
+	// Draw an arrow pointing down at the right end to signal this is a dropdown/popup
+	gui->drawBitmap(down_arrow, _x+_w - 10, _y+1, hilite ? gui->_textcolorhi : gui->_textcolor);
+	
+	// Draw the selected entry, if any
+	if (_selectedItem >= 0) {
+		int align = (gui->getStringWidth(_entries[_selectedItem].name) > _w-6) ? kTextAlignRight : kTextAlignLeft;
+		gui->drawString(_entries[_selectedItem].name, _x+2, _y+3, _w-6, gui->_textcolor, align);
+	}
+}