From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 15 Jul 2007 10:31:16 +0000 (+0000)
Subject: Add key events
X-Git-Tag: 0.9~34
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgltk.git;a=commitdiff_plain;h=68c4aa0eaaade8b163cf9b3a96aa640ea16b1def

Add key events
Add Entry widget
Fix HSlider clicks
---

diff --git a/source/entry.cpp b/source/entry.cpp
new file mode 100644
index 0000000..6daa8ef
--- /dev/null
+++ b/source/entry.cpp
@@ -0,0 +1,98 @@
+#include <SDL/SDL_keysym.h>
+#include <msp/gl/matrix.h>
+#include <msp/gl/transform.h>
+#include "entry.h"
+#include "part.h"
+#include "style.h"
+
+using namespace std;
+
+namespace Msp {
+namespace GLtk {
+
+Entry::Entry(const Resources &r, const string &t):
+	Widget(r),
+	text(t),
+	edit_pos(0),
+	active(false)
+{
+}
+
+void Entry::set_text(const string &t)
+{
+	text=t;
+	if(edit_pos>text.size())
+		edit_pos=text.size();
+}
+
+void Entry::key_press(unsigned key, unsigned, wchar_t ch)
+{
+	if(key==SDLK_LEFT)
+	{
+		if(edit_pos>0)
+			--edit_pos;
+	}
+	else if(key==SDLK_RIGHT)
+	{
+		if(edit_pos<text.size())
+			++edit_pos;
+	}
+	else if(key==SDLK_BACKSPACE)
+	{
+		if(edit_pos>0)
+			text.erase(--edit_pos, 1);
+	}
+	else
+	{
+		text+=ch;
+	}
+}
+
+void Entry::focus_in()
+{
+	active=true;
+}
+
+void Entry::focus_out()
+{
+	active=false;
+}
+
+void Entry::render_part(const Part &part) const
+{
+	if(part.get_name()=="text")
+	{
+		const GL::Font *const font=style->get_font();
+
+		const float font_size=font->get_default_size();
+		unsigned text_w=static_cast<unsigned>(font->get_string_width(text)*font_size);
+
+		GL::push_matrix();
+
+		part.get_alignment().apply(geom, text_w, static_cast<unsigned>(font->get_ascent()*font_size));
+		GL::scale_uniform(font_size);
+
+		const Color &color=style->get_font_color();
+		glColor3f(color.r, color.g, color.b);
+		if(active)
+		{
+			font->draw_string(text.substr(0, edit_pos));
+			glBegin(GL_LINES);
+			glVertex2f(0, 0);
+			glVertex2f(0, 1);
+			glEnd();
+			font->draw_string(text.substr(edit_pos));
+		}
+		else
+			font->draw_string(text);
+		glColor3f(1, 1, 1);
+
+		GL::pop_matrix();
+		render_text(part, text);
+	}
+	else
+		Widget::render_part(part);
+}
+
+} // namespace GLtk
+} // namespace Msp
diff --git a/source/entry.h b/source/entry.h
new file mode 100644
index 0000000..b09ecb1
--- /dev/null
+++ b/source/entry.h
@@ -0,0 +1,30 @@
+#ifndef MSP_GLTK_ENTRY_H_
+#define MSP_GLTK_ENTRY_H_
+
+#include "widget.h"
+
+namespace Msp {
+namespace GLtk {
+
+class Entry: public Widget
+{
+public:
+	Entry(const Resources &, const std::string & =std::string());
+	void set_text(const std::string &);
+	void key_press(unsigned, unsigned, wchar_t);
+	void focus_in();
+	void focus_out();
+private:
+	std::string text;
+	unsigned edit_pos;
+	bool active;
+
+	const char *get_class() const { return "entry"; }
+	void render_part(const Part &) const;
+};
+
+} // namespace GLtk
+} // namespace Msp
+
+#endif
+
diff --git a/source/hslider.cpp b/source/hslider.cpp
index dda8b43..8a9cbb8 100644
--- a/source/hslider.cpp
+++ b/source/hslider.cpp
@@ -20,7 +20,7 @@ void HSlider::button_press(int x, int y, unsigned btn)
 	if(geom.is_inside(x, y))
 	{
 		int sw=get_slider_width();
-		int sx=static_cast<int>((geom.w-sw)*(value-min)/(max-min));
+		int sx=geom.x+static_cast<int>((geom.w-sw)*(value-min)/(max-min));
 		if(btn==1 && x>=sx && x<sx+sw)
 		{
 			dragging=true;
diff --git a/source/label.h b/source/label.h
index 0ab2029..3de71b7 100644
--- a/source/label.h
+++ b/source/label.h
@@ -1,5 +1,5 @@
-#ifndef LABEL_H_
-#define LABEL_H_
+#ifndef MSP_GLTK_LABEL_H_
+#define MSP_GLTK_LABEL_H_
 
 #include "widget.h"
 
diff --git a/source/panel.cpp b/source/panel.cpp
index f6aad86..d3e8df0 100644
--- a/source/panel.cpp
+++ b/source/panel.cpp
@@ -7,7 +7,8 @@ namespace GLtk {
 Panel::Panel(const Resources &r):
 	Widget(r),
 	pointer_focus(0),
-	pointer_grab(0)
+	pointer_grab(0),
+	input_focus(0)
 {
 	update_style();
 }
@@ -29,6 +30,7 @@ void Panel::button_press(int x, int y, unsigned btn)
 			{
 				(*i)->button_press(x-geom.x, y-geom.y, btn);
 				pointer_grab=btn;
+				set_input_focus(*i);
 			}
 	}
 }
@@ -79,6 +81,23 @@ void Panel::pointer_motion(int x, int y)
 	}
 }
 
+void Panel::key_press(unsigned key, unsigned mod, wchar_t ch)
+{
+	if(input_focus)
+		input_focus->key_press(key, mod, ch);
+}
+
+void Panel::key_release(unsigned key, unsigned mod)
+{
+	if(input_focus)
+		input_focus->key_release(key, mod);
+}
+
+void Panel::focus_out()
+{
+	set_input_focus(0);
+}
+
 void Panel::add(Widget &wdg)
 {
 	children.push_back(&wdg);
@@ -109,5 +128,19 @@ void Panel::set_pointer_focus(Widget *wdg)
 	}
 }
 
+void Panel::set_input_focus(Widget *wdg)
+{
+	if(wdg!=input_focus)
+	{
+		if(input_focus)
+			input_focus->focus_out();
+
+		input_focus=wdg;
+
+		if(input_focus)
+			input_focus->focus_in();
+	}
+}
+
 } // namespace GLtk
 } // namespace Msp
diff --git a/source/panel.h b/source/panel.h
index 31be7e5..2fa7d8f 100644
--- a/source/panel.h
+++ b/source/panel.h
@@ -16,18 +16,23 @@ public:
 	void button_press(int, int, unsigned);
 	void button_release(int, int, unsigned);
 	void pointer_motion(int, int);
+	void key_press(unsigned, unsigned, wchar_t);
+	void key_release(unsigned, unsigned);
+	void focus_out();
 private:
 	typedef std::list<Widget *> ChildSeq;
 
 	ChildSeq children;
 	Widget *pointer_focus;
 	unsigned pointer_grab;
+	Widget *input_focus;
 
 	Panel(const Panel &);
 	Panel &operator=(const Panel &);
 	const char *get_class() const { return "panel"; }
 	void render_part(const Part &) const;
 	void set_pointer_focus(Widget *);
+	void set_input_focus(Widget *);
 };
 
 } // namespace GLtk
diff --git a/source/widget.h b/source/widget.h
index 322fbfa..47bc410 100644
--- a/source/widget.h
+++ b/source/widget.h
@@ -27,6 +27,10 @@ public:
 	virtual void pointer_motion(int, int) { }
 	virtual void pointer_enter() { }
 	virtual void pointer_leave() { }
+	virtual void key_press(unsigned, unsigned, wchar_t) { }
+	virtual void key_release(unsigned, unsigned) { }
+	virtual void focus_in() { }
+	virtual void focus_out() { }
 protected:
 	const Resources &res;
 	Geometry geom;