viewport seems to work

git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@275 b9cfdab3-6d41-4d17-bbe4-086880011989

doc/index.html

@@ -398,6 +398,12 @@
 <dd>
 	<a href="#Mw_Widget_Viewport_h__MwViewportClass">MwViewportClass</a>
 </dd>
+<dd>
+	<a href="#Mw_Widget_Viewport_h__MwViewportGetViewport">MwViewportGetViewport</a>
+</dd>
+<dd>
+	<a href="#Mw_Widget_Viewport_h__MwViewportSetSize">MwViewportSetSize</a>
+</dd>
 <dt>
 	<a href="#Mw_Widget_Vulkan_h">Mw/Widget/Vulkan.h</a>
 </dt>
@@ -2518,6 +2524,56 @@
 </dd>
 </dl>
 <hr>
+<pre id="Mw_Widget_Viewport_h__MwViewportGetViewport">MWDECL MwWidget <B><FONT COLOR="#0000FF">MwViewportGetViewport</FONT></B> (
+	MwWidget handle
+);</pre>
+<dl>
+<dd>
+	Get parent widget where widgets should be placed.
+</dd>
+<dt>
+	Parameter <code>handle</code>
+</dt>
+<dd>
+	Widget.
+</dd>
+<dt>
+	Returns
+</dt>
+<dd>
+	Widget.
+</dd>
+</dl>
+<hr>
+<pre id="Mw_Widget_Viewport_h__MwViewportSetSize">MWDECL <B><FONT COLOR="#228B22">void</FONT></B> <B><FONT COLOR="#0000FF">MwViewportSetSize</FONT></B> (
+	MwWidget handle,
+	<B><FONT COLOR="#228B22">int</FONT></B> w,
+	<B><FONT COLOR="#228B22">int</FONT></B> h
+);</pre>
+<dl>
+<dd>
+	Set viewport size.
+</dd>
+<dt>
+	Parameter <code>handle</code>
+</dt>
+<dd>
+	Widget.
+</dd>
+<dt>
+	Parameter <code>w</code>
+</dt>
+<dd>
+	Width.
+</dd>
+<dt>
+	Parameter <code>h</code>
+</dt>
+<dd>
+	Height.
+</dd>
+</dl>
+<hr>
 <h2 align="center" id="Mw_Widget_Vulkan_h">Mw/Widget/Vulkan.h</h2>
 <dl>
 <dt>

include/Mw/Widget/Viewport.h

@@ -18,7 +18,20 @@ extern "C" {
  */
 MWDECL MwClass MwViewportClass;
 
-MWDECL MwWidget MwViewportGetViewport(MwWidget widget);
+/*!
+ * %brief Get parent widget where widgets should be placed
+ * %param handle Widget
+ * %return Widget
+ */
+MWDECL MwWidget MwViewportGetViewport(MwWidget handle);
+
+/*!
+ * %brief Set viewport size
+ * %param handle Widget
+ * %param w Width
+ * %param h Height
+ */
+MWDECL void MwViewportSetSize(MwWidget handle, int w, int h);
 
 #ifdef __cplusplus
 }

include/MwOO/Widget/Viewport.h

@@ -9,6 +9,7 @@ class Viewport : public MwOO::Base {
       public:
 	Viewport(const char* widget_name, MwOO::Base* parent, int x, int y, int w, int h);
 	MwOO::Base  GetViewport(void);
+	void	    SetSize(int w, int h);
 	void	    SetBackground(const char* value);
 	const char* GetBackground(void);
 	void	    SetForeground(const char* value);

oosrc/widget/viewport.cc

@@ -8,6 +8,9 @@ MwOO::Viewport::Viewport(const char* widget_name, MwOO::Base* parent, int x, int
 MwOO::Base MwOO::Viewport::GetViewport(void){
 	return MwOO::Base(MwViewportGetViewport(this->widget));
 }
+void MwOO::Viewport::SetSize(int w, int h){
+	MwViewportSetSize(this->widget, w, h);
+}
 void MwOO::Viewport::SetBackground(const char* value){
 	MwSetText(this->widget, MwNbackground, value);
 }

src/widget/scrollbar.c

@@ -32,6 +32,7 @@ static int calc_length(MwWidget handle) {
 	int max	 = MwScrollBarGetVisibleLength(handle);
 	int len	 = MwGetInteger(handle, MwNmaxValue) - MwGetInteger(handle, MwNminValue);
 	int area = MwGetInteger(handle, MwNareaShown);
+	if(area > MwGetInteger(handle, MwNmaxValue)) area = MwGetInteger(handle, MwNmaxValue);
 
 	return max * (double)area / len;
 }
@@ -55,6 +56,7 @@ static void add_value(MwWidget handle, int mul) {
 	if(val > max) val = max;
 
 	MwSetInteger(handle, MwNvalue, val);
+	MwDispatchUserHandler(handle, MwNchangedHandler, NULL);
 }
 
 static void draw(MwWidget handle) {
@@ -151,6 +153,7 @@ static void mouse_move(MwWidget handle) {
 		if(len < 0) len = 0;
 		if(len > 1) len = 1;
 		MwSetInteger(handle, MwNvalue, (int)((max - min) * len - min));
+		MwDispatchUserHandler(handle, MwNchangedHandler, NULL);
 
 		MwForceRender(handle);
 	}

src/widget/viewport.c

@@ -1,9 +1,88 @@
 /* $Id$ */
 #include <Mw/Milsko.h>
 
+typedef struct viewport {
+	MwWidget vscroll;
+	MwWidget hscroll;
+	MwWidget frame;
+	MwWidget inframe;
+} viewport_t;
+
+static void vscroll_changed(MwWidget handle, void* user, void* call) {
+	viewport_t* vp = user;
+	int	    v  = MwGetInteger(handle, MwNvalue);
+	MwVaApply(vp->inframe,
+		  MwNy, -v,
+		  NULL);
+}
+
+static void hscroll_changed(MwWidget handle, void* user, void* call) {
+	viewport_t* vp = user;
+	int	    v  = MwGetInteger(handle, MwNvalue);
+	MwVaApply(vp->inframe,
+		  MwNx, -v,
+		  NULL);
+}
+
+static void resize(MwWidget handle) {
+	viewport_t* vp = handle->internal;
+	int	    w  = MwGetInteger(handle, MwNwidth);
+	int	    h  = MwGetInteger(handle, MwNheight);
+	if(vp->vscroll == NULL) {
+		vp->vscroll = MwVaCreateWidget(MwScrollBarClass, "vscroll", handle, w - 16, 0, 16, h - 16, NULL);
+		MwAddUserHandler(vp->vscroll, MwNchangedHandler, vscroll_changed, vp);
+	} else {
+		MwVaApply(vp->vscroll,
+			  MwNx, w - 16,
+			  MwNy, 0,
+			  MwNwidth, 16,
+			  MwNheight, h - 16,
+			  NULL);
+	}
+	if(vp->hscroll == NULL) {
+		vp->hscroll = MwVaCreateWidget(MwScrollBarClass, "hscroll", handle, 0, h - 16, w - 16, 16, MwNorientation, MwHORIZONTAL, NULL);
+		MwAddUserHandler(vp->hscroll, MwNchangedHandler, hscroll_changed, vp);
+	} else {
+		MwVaApply(vp->hscroll,
+			  MwNx, 0,
+			  MwNy, h - 16,
+			  MwNwidth, w - 16,
+			  MwNheight, 16,
+			  NULL);
+	}
+	if(vp->frame == NULL) {
+		vp->frame = MwCreateWidget(MwFrameClass, "frame", handle, 0, 0, w - 16, h - 16);
+	} else {
+		MwVaApply(vp->frame,
+			  MwNx, 0,
+			  MwNy, 0,
+			  MwNwidth, w - 16,
+			  MwNheight, h - 16,
+			  NULL);
+	}
+	if(vp->inframe == NULL) {
+		vp->inframe = MwCreateWidget(MwFrameClass, "inframe", vp->frame, 0, 0, w - 16, h - 16);
+	}
+
+	MwVaApply(vp->vscroll,
+		  MwNareaShown, h - 16,
+		  NULL);
+
+	MwVaApply(vp->hscroll,
+		  MwNareaShown, w - 16,
+		  NULL);
+}
+
 static int create(MwWidget handle) {
+	viewport_t* vp = malloc(sizeof(*vp));
+	memset(vp, 0, sizeof(*vp));
+
+	handle->internal = vp;
+
 	MwSetDefault(handle);
 
+	resize(handle);
+
 	return 0;
 }
 
@@ -21,23 +100,47 @@ static void draw(MwWidget handle) {
 	MwLLFreeColor(base);
 }
 
-MwWidget MwViewportGetViewport(MwWidget widget) {
+static void prop_change(MwWidget handle, const char* prop) {
+	if(strcmp(prop, MwNwidth) == 0 || strcmp(prop, MwNheight) == 0) resize(handle);
 }
 
 MwClassRec MwViewportClassRec = {
-    create, /* create */
-    NULL,   /* destroy */
-    draw,   /* draw */
-    NULL,   /* click */
-    NULL,   /* parent_resize */
-    NULL,   /* prop_change */
-    NULL,   /* mouse_move */
-    NULL,   /* mouse_up */
-    NULL,   /* mouse_down */
-    NULL,   /* key */
+    create,	 /* create */
+    NULL,	 /* destroy */
+    draw,	 /* draw */
+    NULL,	 /* click */
+    NULL,	 /* parent_resize */
+    prop_change, /* prop_change */
+    NULL,	 /* mouse_move */
+    NULL,	 /* mouse_up */
+    NULL,	 /* mouse_down */
+    NULL,	 /* key */
     NULL,
     NULL,
     NULL,
     NULL,
     NULL};
 MwClass MwViewportClass = &MwViewportClassRec;
+
+MwWidget MwViewportGetViewport(MwWidget handle) {
+	viewport_t* vp = handle->internal;
+
+	return vp->inframe;
+}
+
+void MwViewportSetSize(MwWidget handle, int w, int h) {
+	viewport_t* vp = handle->internal;
+
+	MwVaApply(vp->vscroll,
+		  MwNmaxValue, h,
+		  NULL);
+
+	MwVaApply(vp->hscroll,
+		  MwNmaxValue, w,
+		  NULL);
+
+	MwVaApply(vp->inframe,
+		  MwNwidth, w,
+		  MwNheight, h,
+		  NULL);
+}