Initial commit

engines/bagel/mfc/gfx/dialog_template.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "common/memstream.h"
+#include "bagel/mfc/gfx/dialog_template.h"
+#include "bagel/mfc/afxwin.h"
+
+namespace Bagel {
+namespace MFC {
+namespace Gfx {
+
+CDialogTemplate::CDialogTemplate(LPCDLGTEMPLATE pTemplate) {
+	setTemplate(pTemplate);
+}
+
+CDialogTemplate::CDialogTemplate(HGLOBAL hGlobal) {
+	LPDLGTEMPLATE dlgTemplate = (LPDLGTEMPLATE)GlobalLock(hGlobal);
+	setTemplate(dlgTemplate);
+	GlobalUnlock(hGlobal);
+}
+
+bool CDialogTemplate::setTemplate(LPCDLGTEMPLATE pTemplate) {
+	Common::MemoryReadStream src((const byte *)pTemplate, 99999);
+	_header.load(src);
+
+	_items.clear();
+	_items.resize(_header._itemCount);
+
+	for (auto &item : _items)
+		item.load(src);
+
+	return true;
+}
+
+bool CDialogTemplate::HasFont() const {
+	return false;
+}
+
+bool CDialogTemplate::SetFont(const char *lpFaceName, uint16 nFontSize) {
+	return false;
+}
+
+bool CDialogTemplate::SetSystemFont(uint16 nFontSize) {
+	return false;
+}
+
+bool CDialogTemplate::GetFont(CString &strFaceName, uint16 &nFontSize) const {
+	return false;
+}
+
+void CDialogTemplate::GetSizeInDialogUnits(SIZE *pSize) const {
+}
+
+void CDialogTemplate::GetSizeInPixels(SIZE *pSize) const {
+}
+
+bool CDialogTemplate::GetFont(LPCDLGTEMPLATE pTemplate,
+		CString &strFaceName, uint16 &nFontSize) {
+	return false;
+}
+
+/*--------------------------------------------*/
+
+void CDialogTemplate::Header::load(Common::SeekableReadStream &src) {
+	byte bTerm;
+
+	_style = src.readUint32LE();
+	_itemCount = src.readByte();
+	_x = src.readSint16LE();
+	_y = src.readSint16LE();
+	_w = src.readSint16LE();
+	_h = src.readSint16LE();
+
+	bTerm = src.readByte();
+	switch (bTerm) {
+	case 0:
+		_menuName.clear();
+		break;
+	case 0xff:
+		// Int resource Id
+		src.skip(2);
+		break;
+	default:
+		src.seek(-1, SEEK_CUR);
+		_menuName = src.readString();
+		break;
+	}
+
+	_className = src.readString();
+	_caption = src.readString();
+
+	if (_style & DS_SETFONT) {
+		_fontInfo._pointSize = src.readUint16LE();
+		_fontInfo._fontName = src.readString();
+	} else {
+		_fontInfo._pointSize = 0;
+		_fontInfo._fontName.clear();
+	}
+}
+
+/*--------------------------------------------*/
+
+void CDialogTemplate::Item::load(Common::SeekableReadStream &src) {
+	byte bTerm;
+
+	_x = src.readSint16LE();
+	_y = src.readSint16LE();
+	_w = src.readSint16LE();
+	_h = src.readSint16LE();
+	_id = src.readUint16LE();
+	_style = src.readUint32LE();
+
+	bTerm = src.readByte();
+	if (bTerm & 0x80) {
+		switch (bTerm) {
+		case 0x80: _className = "BUTTON"; break;
+		case 0x81: _className = "EDIT"; break;
+		case 0x82: _className = "STATIC"; break;
+		case 0x83: _className = "LISTBOX"; break;
+		case 0x84: _className = "SCROLLBAR"; break;
+		case 0x85: _className = "COMBOBOX"; break;
+		default:
+			_className.clear();
+			break;
+		}
+	} else {
+		src.seek(-1, SEEK_CUR);
+		_className = src.readString();
+	}
+
+	bTerm = src.readByte();
+	if (bTerm == 0xff) {
+		// Integer id, not documented
+		src.skip(2);
+	} else {
+		src.seek(-1, SEEK_CUR);
+		_title = src.readString();
+	}
+
+	_data.resize(src.readByte());
+	if (!_data.empty())
+		src.read(&_data[0], _data.size());
+}
+
+LOGFONT CDialogTemplate::ParseFontFromTemplate() {
+	LOGFONT lf;
+	memset(&lf, 0, sizeof(LOGFONT));
+
+	Common::strcpy_s(lf.lfFaceName,
+		_header._fontInfo._fontName.c_str());
+	lf.lfHeight = _header._fontInfo._pointSize;
+
+	return lf;
+}
+
+void CDialogTemplate::getBaseUnits(int &x, int &y) {
+	// Step 1: Get the font
+	LOGFONT lf = ParseFontFromTemplate();
+	HFONT hFont = CreateFontIndirect(&lf);
+
+	// Step 2: Create a temporary DC and select the font
+	HDC hdc = CreateCompatibleDC(nullptr);
+	HGDIOBJ hOldFont = SelectObject(hdc, hFont);
+
+	// Step 3: Get metrics
+	TEXTMETRIC tm;
+	GetTextMetrics(hdc, &tm);
+
+	// Calculate DLU conversion
+	x = tm.tmAveCharWidth;
+	y = tm.tmHeight;
+
+	// Clean up
+	SelectObject(hdc, hOldFont);
+	DeleteDC(hdc);
+	DeleteObject(hFont);
+}
+
+void CDialogTemplate::loadTemplate(CDialog *dialog) {
+	int base_unit_x, base_unit_y;
+	getBaseUnits(base_unit_x, base_unit_y);
+
+	// Set up the overall window
+	RECT bounds = RectToRECT(
+		SafeMulDiv(_header._x, base_unit_x, 4),
+		SafeMulDiv(_header._y, base_unit_y, 8),
+		SafeMulDiv(_header._x + _header._w, base_unit_x, 4),
+		SafeMulDiv(_header._y + _header._h, base_unit_y, 8)
+	);
+
+	// WORKAROUND: For Hodj n Podj Boardgame dialog
+	bounds.right = MIN<long>(bounds.right, 640);
+	bounds.bottom = MIN<long>(bounds.bottom, 480);
+
+	CWnd *wndDialog = static_cast<CWnd *>(dialog);
+	wndDialog->Create(_header._className.c_str(),
+		_header._caption.c_str(),
+		_header._style | WS_POPUP | WS_VISIBLE,
+		bounds,
+		dialog->m_pParentWnd,
+		0
+	);
+
+	// Iterate through the controls
+	for (const auto &item : _items) {
+		CWnd *ctl;
+		if (item._className == "BUTTON")
+			ctl = new CButton();
+		else if (item._className == "EDIT")
+			ctl = new CEdit();
+		else if (item._className == "STATIC")
+			ctl = new CStatic();
+		else if (item._className == "LISTBOX")
+			ctl = new CListBox();
+		else if (item._className == "SCROLLBAR")
+			ctl = new CScrollBar();
+		else
+			error("Unhandle dialog item - %s",
+				item._className.c_str());
+
+		// Convert dialog DLU to actual pixels
+		int x1 = SafeMulDiv(item._x, base_unit_x, 4);
+		int y1 = SafeMulDiv(item._y, base_unit_y, 8);
+		int x2 = SafeMulDiv(item._x + item._w, base_unit_x, 4);
+		int y2 = SafeMulDiv(item._y + item._h, base_unit_y, 8);
+
+		// Set up control
+		bounds = RectToRECT(x1, y1, x2, y2);
+		ctl->Create(item._className.c_str(),
+			item._title.c_str(),
+			item._style | WS_VISIBLE | WS_TABSTOP,
+			bounds,
+			dialog,
+			item._id
+		);
+
+		// Register the control as needing to be
+		// freed when the dialog is closed
+		dialog->_ownedControls.push_back(ctl);
+
+		if (item._style & BS_DEFPUSHBUTTON)
+			dialog->_defaultId = item._id;
+	}
+
+	// Apply the font to the window and all child controls
+	LOGFONT lf = ParseFontFromTemplate();
+	dialog->_dialogFont.CreateFontIndirect(&lf);
+	dialog->SendMessageToDescendants(WM_SETFONT,
+		(WPARAM)dialog->_dialogFont.m_hObject, 0);
+
+	// Allow the dialog to set up replacement controls
+	CDataExchange exchange = { false };
+	dialog->DoDataExchange(&exchange);
+}
+
+} // namespace Gfx
+} // namespace MFC
+} // namespace Bagel