added simple message dialog

svn-id: r5020

10 files changed, 198 insertions, 33 deletions

diff --git a/Makefile.common b/Makefile.common
index 7f67006613..758bfce9e5 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -14,7 +14,7 @@ COMMON_OBJS = common/config-file.o common/engine.o common/file.o \
 	common/timer.o common/util.o
 
 GUI_OBJS = gui/gui.o gui/newgui.o gui/widget.o gui/dialog.o gui/ListWidget.o \
-	gui/ScrollBarWidget.o 
+	gui/ScrollBarWidget.o gui/message.o
 
 SCUMM_OBJS = scumm/actor.o scumm/akos.o scumm/boxes.o scumm/bundle.o \
 	scumm/costume.o scumm/debug.o scumm/debugrl.o scumm/gfx.o scumm/imuse.o \
diff --git a/common/str.cpp b/common/str.cpp
index 9390f6ff47..6a2333d39c 100644
--- a/common/str.cpp
+++ b/common/str.cpp
@@ -22,19 +22,27 @@
 #include "str.h"
 #include "util.h"
 
+
 #ifdef _MSC_VER
+
 #	pragma warning( disable : 4068 ) // unknown pragmas
+
 #endif
 
+
 namespace ScummVM {
 
-String::String(const char *str)
+String::String(const char *str, int len)
 {
 	_refCount = new int(1);
-	if (str) {		
-		_capacity = _len = resStrLen(str);
+	if (str) {
+		if (len)
+			_capacity = _len = len;
+		else
+			_capacity = _len = resStrLen(str);
 		_str = (char *)calloc(1, _capacity+1);
-		memcpy(_str, str, _len+1);
+		memcpy(_str, str, _len);
+		_str[_len] = 0;
 	} else {
 		_capacity = _len = 0;
 		_str = 0;
diff --git a/common/str.h b/common/str.h
index b35c42d0e5..3776ab64c3 100644
--- a/common/str.h
+++ b/common/str.h
@@ -33,7 +33,7 @@ namespace ScummVM {
  Only constructor: ConstString(const char *ptr)
  Then whenever you now use "const String &" in a parameter, use "const ConstString &"
  instead (mayhaps make a typedef even). Thus, parameters are passed w/o 
- causing a free/malloc. Then only for permenant storage, when we assign it to a
+ causing a free/malloc. Then only for permanent storage, when we assign it to a
  real String object, will a malloc be issued (to this end, make String aware of
  ConstString ?!?
 */
@@ -46,7 +46,7 @@ protected:
 
 public:
 	ConstString() : _str(0), _len(0) {}
-	ConstString(const char *str) : _str((char*)str) { _len = str ? strlen(str) : 0; }
+	ConstString(const char *str, int len = 0) : _str((char*)str) { _len = str ? (len ? len : strlen(str)) : 0; }
 	virtual ~ConstString() {}
 	
 	bool operator ==(const ConstString& x) const;
@@ -58,6 +58,12 @@ public:
 	bool operator >(const ConstString& x) const;
 	bool operator >=(const ConstString& x) const;
 
+	char operator [](int idx) const
+	{
+		assert(_str && idx >= 0 && idx < _len);
+		return _str[idx];
+	}
+
 	const char *c_str() const		{ return _str; }
 	int size() const				{ return _len; }
 
@@ -71,17 +77,33 @@ protected:
 
 public:
 	String() : _capacity(0) { _refCount = new int(1); }
-	String(const char *str);
+	String(const char *str, int len = 0);
 	String(const ConstString &str);
 	String(const String &str);
 	virtual ~String();
 	
 	String& operator  =(const char* str);
+// TODO - We should use RTTI here - that is, not real C++ RTTI but some magic
+// constant in each string object. We want to be able to optimize the case when
+// a real 'String' object is passed to a function as a ConstString obj and then
+// assigned to a 'String' object
 	String& operator  =(const String& str);
 	String& operator +=(const char* str);
 	String& operator +=(const String& str);
 	String& operator +=(char c);
 
+	char operator [](int idx) const
+	{
+		assert(_str && idx >= 0 && idx < _len);
+		return _str[idx];
+	}
+
+	char &operator [](int idx)
+	{
+		assert(_str && idx >= 0 && idx < _len);
+		return _str[idx];
+	}
+
 	void deleteLastChar();
 	void clear();
 
@@ -99,8 +121,19 @@ public:
 	void push_back(const char* str)
 	{
 		ensureCapacity(_size + 1);
-		_data[_size] = str;
-		_size++;
+		_data[_size++] = str;
+	}
+
+	void push_back(const ConstString& str)
+	{
+		ensureCapacity(_size + 1);
+		_data[_size++] = str;
+	}
+	
+	void push_back(const String& str)
+	{
+		ensureCapacity(_size + 1);
+		_data[_size++] = str;
 	}
 };
 
diff --git a/gui/ListWidget.h b/gui/ListWidget.h
index c778b2e807..106e61ceb6 100644
--- a/gui/ListWidget.h
+++ b/gui/ListWidget.h
@@ -32,11 +32,6 @@ enum {
 	kListNumberingOne	= 1
 };
 
-// Height of a signle entry line
-enum {
-	kLineHeight			= 11
-};
-
 // Some special commands
 enum {
 	kListItemDoubleClickedCmd	= 'LIdb',	// 'data' will be item index
diff --git a/gui/message.cpp b/gui/message.cpp
new file mode 100644
index 0000000000..351b120797
--- /dev/null
+++ b/gui/message.cpp
@@ -0,0 +1,73 @@
+/* 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 "message.h"
+#include "newgui.h"
+
+#include "common/list.h"
+
+
+MessageDialog::MessageDialog(NewGui *gui, const String &message)
+	: Dialog(gui, 30, 20, 260, 124)
+{
+	// First, determine the size the dialog needs. For this we have to break
+	// down the string into lines, and taking the maximum of their widths.
+	// Using this, and accounting for the space the button(s) need, we can set
+	// the real size of the dialog
+	ScummVM::StringList lines;
+	String tmp;
+	const char *str = message.c_str();
+	const char *start = str;
+	int lineWidth, maxlineWidth = 0;
+	
+	while (*str) {
+		if (*str == '\n') {
+			tmp = String(start, str - start);
+			lines.push_back(tmp);
+			lineWidth = _gui->getStringWidth(tmp);
+			if (maxlineWidth < lineWidth) 
+				maxlineWidth = lineWidth;
+			start = str + 1;
+		}
+		
+		++str;
+	}
+	if (*start) {
+		tmp = String(start, str - start);
+		lines.push_back(tmp);
+		lineWidth = _gui->getStringWidth(tmp);
+		if (maxlineWidth < lineWidth) 
+			maxlineWidth = lineWidth;
+	}
+	
+	// TODO - we should probably check for over/underflows here
+	_w = maxlineWidth + 20;
+	_h = lines.size() * kLineHeight + 30;
+	_x = (320 - _w) / 2;
+	
+	for (int i = 0; i < lines.size(); i++) {
+		new StaticTextWidget(this, 10, 10+i*kLineHeight, maxlineWidth, kLineHeight,
+								lines[i], kTextAlignCenter);
+	}
+
+	// FIXME - the vertical position has to be adjusted
+	addButton((_w - 54)/2, _h - 20, 54, 16, "OK", kCloseCmd, '\n');	// Confirm dialog
+}
diff --git a/gui/message.h b/gui/message.h
new file mode 100644
index 0000000000..136d96be98
--- /dev/null
+++ b/gui/message.h
@@ -0,0 +1,35 @@
+/* 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.
+ *
+ * $Header$
+ */
+
+#ifndef MESSAGE_DIALOG_H
+#define MESSAGE_DIALOG_H
+
+#include "dialog.h"
+#include "common/str.h"
+
+class MessageDialog : public Dialog {
+	typedef ScummVM::String String;
+public:
+	MessageDialog(NewGui *gui, const String &message);
+
+protected:
+};
+
+#endif
diff --git a/gui/newgui.cpp b/gui/newgui.cpp
index 7adfa1aaea..dbdf9d170d 100644
--- a/gui/newgui.cpp
+++ b/gui/newgui.cpp
@@ -401,11 +401,12 @@ void NewGui::drawChar(const char chr, int xx, int yy, int16 color)
 	}
 }
 
-int NewGui::getStringWidth(const char *str)
+int NewGui::getStringWidth(const String &str)
 {
 	int space = 0;
-	while (*str)
-		space += getCharWidth(*str++);
+
+	for (int i = 0; i < str.size(); ++i)
+		space += getCharWidth(str[i]);
 	return space;
 }
 
@@ -414,17 +415,17 @@ int NewGui::getCharWidth(char c)
 	return guifont[c+6];
 }
 
-void NewGui::drawString(const char *str, int x, int y, int w, int16 color, int align)
+void NewGui::drawString(const String &str, int x, int y, int w, int16 color, int align)
 {
 	int width = getStringWidth(str);
 	if (align == kTextAlignCenter)
 		x = x + (w - width - 1)/2;
 	else if (align == kTextAlignRight)
 		x = x + w - width;
-	while (*str) {
-		drawChar(*str, x, y, color);
-		x += getCharWidth(*str);
-		str++;
+
+	for (int i = 0; i < str.size(); ++i) {
+		drawChar(str[i], x, y, color);
+		x += getCharWidth(str[i]);
 	}
 }
 
diff --git a/gui/newgui.h b/gui/newgui.h
index b1ce4daeea..455904026d 100644
--- a/gui/newgui.h
+++ b/gui/newgui.h
@@ -23,12 +23,20 @@
 
 #include "scummsys.h"
 #include "system.h"	// For events
+#include "common/str.h"
 
 class Dialog;
 
 #define hline(x, y, x2, color) line(x, y, x2, y, color);
 #define vline(x, y, y2, color) line(x, y, x, y2, color);
 
+// Height of a single text line
+enum {
+	kLineHeight			= 11
+};
+
+
+// Text alignment modes for drawString()
 enum {
 	kTextAlignLeft,
 	kTextAlignCenter,
@@ -59,6 +67,7 @@ public:
 // This class hopefully will replace the old Gui class completly one day 
 class NewGui {
 	friend class Dialog;
+	typedef ScummVM::String String;
 public:
 
 	// Main entry for the GUI: this will start an event loop that keeps running
@@ -123,9 +132,9 @@ public:
 	void frameRect(int x, int y, int w, int h, int16 color);
 	void addDirtyRect(int x, int y, int w, int h);
 	void drawChar(char c, int x, int y, int16 color);
-	int getStringWidth(const char *str);
+	int getStringWidth(const String &str);
 	int getCharWidth(char c);
-	void drawString(const char *str, int x, int y, int w, int16 color, int align = kTextAlignLeft);
+	void drawString(const String &str, int x, int y, int w, int16 color, int align = kTextAlignLeft);
 
 	void drawBitmap(uint32 bitmap[8], int x, int y, int16 color);
 };
diff --git a/scumm/dialogs.h b/scumm/dialogs.h
index 61260ac6ca..bc8111ea8b 100644
--- a/scumm/dialogs.h
+++ b/scumm/dialogs.h
@@ -63,16 +63,13 @@ public:
 	AboutDialog(NewGui *gui, Scumm *scumm);
 };
 
-class SoundDialog;
-class KeysDialog;
-class MiscDialog;
 
 class OptionsDialog : public ScummDialog {
 protected:
-	AboutDialog		*_aboutDialog;
-	SoundDialog		*_soundDialog;
-	KeysDialog		*_keysDialog;
-	MiscDialog		*_miscDialog;
+	Dialog		*_aboutDialog;
+	Dialog		*_soundDialog;
+	Dialog		*_keysDialog;
+	Dialog		*_miscDialog;
 
 public:
 	OptionsDialog(NewGui *gui, Scumm *scumm);
diff --git a/scumm/scummvm.cpp b/scumm/scummvm.cpp
index 6a8e9df268..cc5fdde180 100644
--- a/scumm/scummvm.cpp
+++ b/scumm/scummvm.cpp
@@ -33,6 +33,7 @@
 #include "gameDetector.h"
 #include "gui/gui.h"
 #include "gui/newgui.h"
+#include "gui/message.h"
 #include "object.h"
 #include "resource.h"
 #include "string.h"
@@ -936,8 +937,21 @@ void Scumm::runDialog(Dialog *dialog)
 
 void Scumm::pauseDialog()
 {
-	if (!_pauseDialog)
+	if (!_pauseDialog) {
+#if 1
+	// HACK HACK
+		const char *message = "This demonstrates MessageDialog's abilities.\n"
+						      "For example it supports multi line text.\n"
+						      " \n"
+						      "Well, not much more right now, really :-)\n"
+						      "And there are still some bugs in it, too\n"
+						      " ";	// <- FIXME: This is needed due to a bug...
+		_pauseDialog = new MessageDialog(_newgui, message);
+#else
 		_pauseDialog = new PauseDialog(_newgui, this);
+#endif
+	}
+
 	runDialog(_pauseDialog);
 }