# HG changeset patch
# User KUDr
# Date 1173494391 0
# Node ID 59b7305f9a8b06b26c51658ef93b0a825df10ee7
# Parent  272c690043e35e1ed290abefe9df5e5a939897fe
(svn r9087) [cpp_gui] -Codechange: Window is now clipping its widgets in OnPaint()
 -Add: ClipDrawContext class to simplify draw clipping
 -Fix: ResizeBox now can't resize window to negative width/height

diff -r 272c690043e3 -r 59b7305f9a8b src/gfx.h
--- a/src/gfx.h	Tue Mar 06 20:18:17 2007 +0000
+++ b/src/gfx.h	Sat Mar 10 02:39:51 2007 +0000
@@ -205,6 +205,8 @@
 int DrawStringTruncated(int x, int y, StringID str, uint16 color, uint maxw);
 
 int DoDrawString(const char *string, int x, int y, uint16 color);
+typedef uint32 WChar;
+int DoDrawStringW(const WChar *string, int x, int y, uint16 color);
 int DoDrawStringTruncated(const char *str, int x, int y, uint16 color, uint maxw);
 
 void DrawStringCenterUnderline(int x, int y, StringID str, uint16 color);
@@ -295,6 +297,34 @@
 	IS_PALETTE_COLOR = 0x100, ///< color value is already a real palette color index, not an index of a StringColor
 } StringColorFlags;
 
+/**
+ * Create instance of this class on the stack (as local var) to set new clipping
+ * context. The original clipping context gets restored automatically when this
+ * variable is destroyed (comes out of scope).
+ */
+struct ClipDrawContext {
+	DrawPixelInfo m_dpi;
+	DrawPixelInfo *m_old_dpi;
+
+	ClipDrawContext(int left, int top, int width, int height)
+	{
+		if (FillDrawPixelInfo(&m_dpi, left, top, width, height)) {
+			m_old_dpi = _cur_dpi;
+			_cur_dpi = &m_dpi;
+		} else {
+			m_old_dpi = NULL;
+		}
+	}
+	~ClipDrawContext()
+	{
+		if (m_old_dpi != NULL) _cur_dpi = m_old_dpi;
+	}
+	bool IsEmpty()
+	{
+		return m_old_dpi == NULL;
+	}
+};
+
 
 #ifdef _DEBUG
 extern bool _dbg_screen_rect;
diff -r 272c690043e3 -r 59b7305f9a8b src/widget/widget_resizebox.cpp
--- a/src/widget/widget_resizebox.cpp	Tue Mar 06 20:18:17 2007 +0000
+++ b/src/widget/widget_resizebox.cpp	Sat Mar 10 02:39:51 2007 +0000
@@ -38,7 +38,10 @@
 	}
 	BaseWindow *w = GetWindow();
 	w->SetDirty();
-	w->SetSize(e.m_pt - w->TopLeft() + m_sizing_offset);
+	Point16 size = e.m_pt - w->TopLeft() + m_sizing_offset;
+	size.x = max(size.x, DEFAULT_WIDTH);
+	size.y = max(size.y, DEFAULT_HEIGHT);
+	w->SetSize(size);
 	e.SetHandled();
 	w->SetDirty();
 }
diff -r 272c690043e3 -r 59b7305f9a8b src/window.cpp
--- a/src/window.cpp	Tue Mar 06 20:18:17 2007 +0000
+++ b/src/window.cpp	Sat Mar 10 02:39:51 2007 +0000
@@ -292,6 +292,12 @@
 	assert(widget != NULL);
 }
 
+/*virtual*/ void BaseWindow::OnPaint(gui::EvtPaint &ev)
+{
+	ClipDrawContext ctx(0, 0, Width(), Height());
+	super::OnPaint(ev);
+}
+
 /**
 * Open a new window. If there is no space for a new window, close an open
 * window. Try to avoid stickied windows, but if there is no else, close one of
diff -r 272c690043e3 -r 59b7305f9a8b src/window.h
--- a/src/window.h	Tue Mar 06 20:18:17 2007 +0000
+++ b/src/window.h	Sat Mar 10 02:39:51 2007 +0000
@@ -456,6 +456,9 @@
 	/*virtual*/ void CreateNcWidgets();
 	/*virtual*/ void CreateWidgets(); ///< @TODO remove it when old gui infrastructure will no longer be used
 
+	/*virtual*/ void OnPaint(gui::EvtPaint &ev);
+
+
 	static BaseWindow* Allocate(int x, int y, int width, int height, WindowProc *proc, WindowClass cls, const OldWidget *widget);
 	static BaseWindow* Allocate(const WindowDesc *desc, int window_number = 0);
 	static BaseWindow* AllocateFront(const WindowDesc *desc, int window_number = 0);