From a38c924ff32081f5cd67c2b0e2d5ca61f0e99de2 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 23 Nov 2007 16:01:17 +0000
Subject: [PATCH] Support loading Buttons from datafiles Support repeated
 borders in Graphic Fix coordinate handling in Root Use the HOVER state in
 Button

---
 source/button.cpp  | 28 ++++++++++++++-
 source/button.h    |  9 +++++
 source/graphic.cpp | 86 +++++++++++++++++++++++++++-------------------
 source/graphic.h   |  5 +++
 source/panel.cpp   |  6 ++--
 source/root.cpp    |  9 +++++
 source/root.h      |  1 +
 source/state.cpp   |  8 ++---
 8 files changed, 110 insertions(+), 42 deletions(-)

diff --git a/source/button.cpp b/source/button.cpp
index 2c8bedb..543782e 100644
--- a/source/button.cpp
+++ b/source/button.cpp
@@ -26,12 +26,26 @@ void Button::button_release(int x, int y, unsigned btn)
 {
 	if(btn==1)
 	{
-		state=NORMAL;
 		if(geom.is_inside(x, y))
+		{
 			signal_clicked.emit();
+			state=HOVER;
+		}
+		else
+			state=NORMAL;
 	}
 }
 
+void Button::pointer_enter()
+{
+	state=HOVER;
+}
+
+void Button::pointer_leave()
+{
+	state=NORMAL;
+}
+
 void Button::render_part(const Part &part) const
 {
 	if(part.get_name()=="text")
@@ -40,5 +54,17 @@ void Button::render_part(const Part &part) const
 		Widget::render_part(part);
 }
 
+
+Button::Loader::Loader(Button &btn):
+	Widget::Loader(btn)
+{
+	add("text", &Button::text);
+}
+
+Button &Button::Loader::get_object() const
+{
+	return static_cast<Button &>(wdg);
+}
+
 } // namespace GLtk
 } // namespace Msp
diff --git a/source/button.h b/source/button.h
index 8bd2d31..841786c 100644
--- a/source/button.h
+++ b/source/button.h
@@ -10,12 +10,21 @@ namespace GLtk {
 class Button: public Widget
 {
 public:
+	class Loader: public Widget::Loader
+	{
+	public:
+		Loader(Button &);
+		Button &get_object() const;
+	};
+
 	sigc::signal<void> signal_clicked;
 
 	Button(const Resources &, const std::string & =std::string());
 	void set_text(const std::string &);
 	void button_press(int, int, unsigned);
 	void button_release(int, int, unsigned);
+	void pointer_enter();
+	void pointer_leave();
 private:
 	std::string text;
 	bool pressed;
diff --git a/source/graphic.cpp b/source/graphic.cpp
index 611cdb4..01bfcdb 100644
--- a/source/graphic.cpp
+++ b/source/graphic.cpp
@@ -8,57 +8,72 @@ namespace Msp {
 namespace GLtk {
 
 Graphic::Graphic():
-	texture(0)
+	texture(0),
+	repeat(false)
 { }
 
 void Graphic::render(unsigned wd, unsigned ht) const
 {
-	float x[4];
-	float y[4];
-	float u[4];
-	float v[4];
-
-	x[0]=0.0f-shadow.left;
-	x[1]=x[0]+border.left;
-	x[3]=wd+shadow.right;
-	x[2]=x[3]-border.right;
-
-	y[0]=0.0f-shadow.bottom;
-	y[1]=y[0]+border.bottom;
-	y[3]=ht+shadow.top;
-	y[2]=y[3]-border.top;
-
-	const unsigned twidth=texture->get_width();
-	u[0]=static_cast<float>(slice.x)/twidth;
-	u[1]=static_cast<float>(slice.x+border.left)/twidth;
-	u[2]=static_cast<float>(slice.x+slice.w-border.right)/twidth;
-	u[3]=static_cast<float>(slice.x+slice.w)/twidth;
-
-	const unsigned theight=texture->get_height();
-	v[0]=static_cast<float>(slice.y)/theight;
-	v[1]=static_cast<float>(slice.y+border.bottom)/theight;
-	v[2]=static_cast<float>(slice.y+slice.h-border.top)/theight;
-	v[3]=static_cast<float>(slice.y+slice.h)/theight;
+	GL::VertexArray varr((GL::TEXCOORD2, GL::VERTEX2));
+	RefPtr<GL::VertexArrayBuilder> vab=varr.modify();
+
+	vector<float> x, y;
+	create_coords(0.0f-shadow.left, wd+shadow.right, border.left, border.right, slice.w-border.left-border.right, x);
+	create_coords(0.0f-shadow.bottom, ht+shadow.top, border.bottom, border.top, slice.h-border.bottom-border.top, y);
+
+	vector<float> u, v;
+	create_texcoords(slice.x, slice.x+slice.w, border.left, border.right, texture->get_width(), u);
+	create_texcoords(slice.y, slice.y+slice.h, border.bottom, border.top, texture->get_height(), v);
 
-	texture->bind();
 	unsigned xmin=border.left ? 0 : 1;
-	unsigned xmax=border.right ? 3 : 2;
+	unsigned xmax=x.size()-(border.right ? 2 : 3);
 	unsigned ymin=border.bottom ? 0 : 1;
-	unsigned ymax=border.top ? 3 : 2;
+	unsigned ymax=y.size()-(border.top ? 2 : 3);
 
+	texture->bind();
 	GL::Immediate imm((GL::TEXCOORD2,GL::VERTEX2));
-	for(unsigned i=ymin; i<ymax; ++i)
+	imm.begin(GL::QUADS);
+	for(unsigned i=ymin; i<=ymax; ++i)
 	{
-		imm.begin(GL::QUAD_STRIP);
+		unsigned i2=(i==0 ? 0 : i==y.size()-2 ? 2 : 1);
 		for(unsigned j=xmin; j<=xmax; ++j)
 		{
-			imm.texcoord(u[j], v[i]);
+			unsigned j2=(j==0 ? 0 : j==x.size()-2 ? 2 : 1);
+			imm.texcoord(u[j2], v[i2]);
 			imm.vertex(x[j], y[i]);
-			imm.texcoord(u[j], v[i+1]);
+			imm.texcoord(u[j2+1], v[i2]);
+			imm.vertex(x[j+1], y[i]);
+			imm.texcoord(u[j2+1], v[i2+1]);
+			imm.vertex(x[j+1], y[i+1]);
+			imm.texcoord(u[j2], v[i2+1]);
 			imm.vertex(x[j], y[i+1]);
 		}
-		imm.end();
 	}
+	imm.end();
+}
+
+void Graphic::create_coords(float low, float high, float brd1, float brd2, float block, vector<float> &coords) const
+{
+	coords.push_back(low);
+	coords.push_back(low+brd1);
+	if(repeat)
+	{
+		float space=high-low-brd1-brd2;
+		unsigned div=max(static_cast<unsigned>(space/block), 1U);
+		float delta=space/div;
+		for(unsigned i=1; i<div; ++i)
+			coords.push_back(low+brd1+delta*i);
+	}
+	coords.push_back(high-brd2);
+	coords.push_back(high);
+}
+
+void Graphic::create_texcoords(float low, float high, float brd1, float brd2, float scale, vector<float> &coords) const
+{
+	coords.push_back(low/scale);
+	coords.push_back((low+brd1)/scale);
+	coords.push_back((high-brd2)/scale);
+	coords.push_back(high/scale);
 }
 
 
@@ -69,6 +84,7 @@ Graphic::Loader::Loader(Graphic &g, Resources &r):
 	add("texture", &Loader::texture);
 	add("slice",   &Loader::slice);
 	add("border",  &Loader::border);
+	add("repeat",  &Graphic::repeat);
 	add("shadow",  &Loader::shadow);
 }
 
diff --git a/source/graphic.h b/source/graphic.h
index a9722ad..b931113 100644
--- a/source/graphic.h
+++ b/source/graphic.h
@@ -23,6 +23,7 @@ public:
 		typedef Resources Collection;
 
 		Loader(Graphic &, Resources &);
+		Graphic &get_object() const { return graph; }
 	private:
 		void texture(const std::string &);
 		void slice(unsigned, unsigned, unsigned, unsigned);
@@ -42,6 +43,10 @@ private:
 	Sides shadow;
 	const GL::Texture2D *texture;
 	Geometry slice;
+	bool repeat;
+
+	void create_coords(float, float, float, float, float, std::vector<float> &) const;
+	void create_texcoords(float, float, float, float, float, std::vector<float> &) const;
 };
 
 } // namespace GLtk
diff --git a/source/panel.cpp b/source/panel.cpp
index efe857e..c763e6e 100644
--- a/source/panel.cpp
+++ b/source/panel.cpp
@@ -1,4 +1,5 @@
 #include <msp/core/refptr.h>
+#include "button.h"
 #include "label.h"
 #include "panel.h"
 #include "part.h"
@@ -148,8 +149,9 @@ Panel::Loader::Loader(Panel &p, map<string, Widget *> &m):
 	pnl(p),
 	wdg_map(m)
 {
-	add("label", &Loader::child<Label>);
-	add("panel", &Loader::panel);
+	add("button", &Loader::child<Button>);
+	add("label",  &Loader::child<Label>);
+	add("panel",  &Loader::panel);
 }
 
 template<typename T>
diff --git a/source/root.cpp b/source/root.cpp
index 83042a6..32cd879 100644
--- a/source/root.cpp
+++ b/source/root.cpp
@@ -18,18 +18,27 @@ Root::Root(Resources &r, Window &w):
 
 void Root::button_press_event(int x, int y, unsigned btn, unsigned)
 {
+	translate_coords(x, y);
 	button_press(x, y, btn);
 }
 
 void Root::button_release_event(int x, int y, unsigned btn, unsigned)
 {
+	translate_coords(x, y);
 	button_release(x, y, btn);
 }
 
 void Root::pointer_motion_event(int x, int y)
 {
+	translate_coords(x, y);
 	pointer_motion(x, y);
 }
 
+void Root::translate_coords(int &x, int &y)
+{
+	x=x*geom.w/window.get_width();
+	y=geom.h-1-y*geom.h/window.get_height();
+}
+
 } // namespace GLtk
 } // namespace Msp
diff --git a/source/root.h b/source/root.h
index 01153f5..809780c 100644
--- a/source/root.h
+++ b/source/root.h
@@ -20,6 +20,7 @@ private:
 	void pointer_motion_event(int, int);
 	void key_press_event(unsigned, unsigned, wchar_t);
 	void key_release_event(unsigned, unsigned);
+	void translate_coords(int &, int &);
 };
 
 } // namespace GLtk
diff --git a/source/state.cpp b/source/state.cpp
index bbff03d..9e44e14 100644
--- a/source/state.cpp
+++ b/source/state.cpp
@@ -9,13 +9,13 @@ istream &operator>>(istream &is, State &state)
 {
 	string str;
 	is>>str;
-	if(str=="normal")
+	if(str=="NORMAL")
 		state=NORMAL;
-	else if(str=="hover")
+	else if(str=="HOVER")
 		state=HOVER;
-	else if(str=="active")
+	else if(str=="ACTIVE")
 		state=ACTIVE;
-	else if(str=="disabled")
+	else if(str=="DISABLED")
 		state=DISABLED;
 	else
 		is.setstate(ios_base::failbit);
-- 
2.43.0