From d114b136897ca569d819da5f9b75bd08f9cbe2c0 Mon Sep 17 00:00:00 2001
From: Eleni Maria Stea <elene.mst@gmail.com>
Date: Thu, 21 Feb 2013 15:36:09 +0200
Subject: [PATCH] *in progress* f***ed up :p TODO: 1- v-sync 2- relative pos

---
 src/geom.h    |    2 +-
 src/gfx.cc    |    8 ++++++
 src/window.cc |   24 ++++++++++++++++++
 src/window.h  |    7 ++++++
 src/wm.cc     |   78 +++++++++++++++++++++++++++++++++++++++++++++------------
 5 files changed, 102 insertions(+), 17 deletions(-)

diff --git a/src/geom.h b/src/geom.h
index 9c00b41..8b596ce 100644
--- a/src/geom.h
+++ b/src/geom.h
@@ -2,7 +2,7 @@
 #define GEOM_H_
 
 struct Rect {
-	int x, y;
+	mutable int x, y;
 	int width, height;
 };
 
diff --git a/src/gfx.cc b/src/gfx.cc
index 5c04d1e..45c918b 100644
--- a/src/gfx.cc
+++ b/src/gfx.cc
@@ -92,6 +92,14 @@ void clear_screen(int r, int g, int b)
 
 void fill_rect(const Rect &rect, int r, int g, int b)
 {
+	if(rect.x < 0) {
+		rect.x = 0;
+	}
+
+	if(rect.y < 0) {
+		rect.y = 0;
+	}
+
 	unsigned char *fb = framebuffer + (rect.x + screen_rect.width * rect.y) * 4;
 	for(int i=0; i<rect.height; i++) {
 		for(int j=0; j<rect.width; j++) {
diff --git a/src/window.cc b/src/window.cc
index f5b1ada..2a8b6f5 100644
--- a/src/window.cc
+++ b/src/window.cc
@@ -13,6 +13,7 @@ Window::Window()
 	memset(&callbacks, 0, sizeof callbacks);
 	dirty = true;
 	managed = true;
+	focusable = true;
 }
 
 Window::~Window()
@@ -113,6 +114,16 @@ bool Window::get_managed() const
 	return managed;
 }
 
+void Window::set_focusable(bool focusable)
+{
+	this->focusable = focusable;
+}
+
+bool Window::get_focusable() const
+{
+	return focusable;
+}
+
 void Window::set_display_callback(DisplayFuncType func)
 {
 	callbacks.display = func;
@@ -172,6 +183,19 @@ void Window::remove_child(Window *win)
 	}
 }
 
+Window **Window::get_children()
+{
+	if(children.empty()) {
+		return 0;
+	}
+	return &children[0];
+}
+
+int Window::get_children_count() const
+{
+	return (int)children.size();
+}
+
 const Window *Window::get_parent() const
 {
 	return parent;
diff --git a/src/window.h b/src/window.h
index 040f6b5..1eebed0 100644
--- a/src/window.h
+++ b/src/window.h
@@ -17,6 +17,7 @@ private:
 
 	bool dirty;
 	bool managed; // whether the wm manages (+decorates) this win
+	bool focusable;
 
 public:
 	Window();
@@ -45,6 +46,9 @@ public:
 	void set_managed(bool managed);
 	bool get_managed() const;
 
+	void set_focusable(bool focusable);
+	bool get_focusable() const;
+
 	void set_display_callback(DisplayFuncType func);
 	void set_keyboard_callback(KeyboardFuncType func);
 	void set_mouse_button_callback(MouseButtonFuncType func);
@@ -59,6 +63,9 @@ public:
 	void add_child(Window *win);
 	void remove_child(Window *win);
 
+	Window **get_children();
+	int get_children_count() const;
+
 	const Window *get_parent() const;
 	Window *get_parent();
 
diff --git a/src/wm.cc b/src/wm.cc
index d3b3c95..ec73a5b 100644
--- a/src/wm.cc
+++ b/src/wm.cc
@@ -1,5 +1,6 @@
 #include <algorithm>
 #include <stdexcept>
+#include <stdio.h>	// TODO
 
 #include "gfx.h"
 #include "wm.h"
@@ -11,7 +12,7 @@ WindowManager *wm;
 static WindowManager wminst;
 
 static void display(Window *win);
-static void mouse(Window *win, int key, bool pressed);
+static void mouse(Window *win, int bn, bool pressed);
 static void motion(Window *win, int x, int y);
 
 void WindowManager::create_frame(Window *win)
@@ -20,11 +21,13 @@ void WindowManager::create_frame(Window *win)
 	Window *parent = win->get_parent();
 
 	frame->set_display_callback(display);
-//	frame->set_mouse_button_callback(mouse);
-//	frame->set_mouse_motion_callback(motion);
+	frame->set_mouse_button_callback(mouse);
+	frame->set_mouse_motion_callback(motion);
 
 	frame->add_child(win);
-	frames.push_back(frame);
+	frame->set_focusable(false);
+
+	windows.push_back(frame);
 
 	Rect win_rect = win->get_rect();
 	frame->move(win_rect.x - frame_thickness, 
@@ -43,10 +46,10 @@ void WindowManager::destroy_frame(Window *win)
 	}
 
 	std::list<Window*>::iterator it;
-	it = std::find(frames.begin(), frames.end(), frame);
-	if(it != frames.end()) {
+	it = std::find(windows.begin(), windows.end(), frame);
+	if(it != windows.end()) {
 		root_win->add_child(win);
-		frames.erase(it);
+		windows.erase(it);
 		delete frame;
 	}
 }
@@ -160,7 +163,25 @@ void WindowManager::remove_window(Window *win)
 
 void WindowManager::set_focused_window(Window *win)
 {
-	focused_win = win;
+	if(!win) {
+		focused_win = 0;
+		return;
+	}
+
+	if(win->get_focusable()) {
+		focused_win = win;
+		return;
+	}
+
+	Window **children = win->get_children();
+	for(int i=0; i<win->get_children_count(); i++) {
+		if(children[0]->get_focusable()) {
+			set_focused_window(children[0]);
+			return;
+		}
+	}
+
+	focused_win = 0;
 }
 
 const Window *WindowManager::get_focused_window() const
@@ -175,17 +196,17 @@ Window *WindowManager::get_focused_window()
 
 Window *WindowManager::get_window_at_pos(int pointer_x, int pointer_y)
 {
-	Window *win = 0;
 	std::list<Window*>::reverse_iterator rit = windows.rbegin();
 	while(rit != windows.rend()) {
-		if((*rit)->contains_point(pointer_x, pointer_y)) {
-			win = *rit;
-			break;
+		Window *w = *rit++;
+		Window *parent = w->get_parent();
+
+		if(parent == root_win && w->contains_point(pointer_x, pointer_y)) {
+			return w;
 		}
-		rit++;
 	}
 
-	return win;
+	return 0;
 }
 
 static void display(Window *win)
@@ -196,5 +217,30 @@ static void display(Window *win)
 	}
 }
 
-//static void mouse(Window *win, int key, bool pressed);
-//static void motion(Window *win, int x, int y);
+static int prev_x = -1, prev_y;
+
+static void mouse(Window *win, int bn, bool pressed)
+{
+	printf("mouse callback (%d, %s)\n", bn, pressed ? "pressed" : "released");
+	if(bn == 0) {
+		if(pressed) {
+			get_pointer_pos(&prev_x, &prev_y);
+		} else {
+			prev_x = -1;
+		}
+	}
+}
+
+static void motion(Window *win, int x, int y)
+{
+	int left_bn = get_button(0);
+	if(left_bn && prev_x != -1) {
+		int dx = x - prev_x;
+		int dy = y - prev_y;
+		prev_x = x;
+		prev_y = y;
+
+		Rect rect = win->get_rect();
+		win->move(rect.x + dx, rect.y + dy);
+	}
+}
-- 
1.7.10.4