Window moving :)

1 files changed, 189 insertions, 12 deletions

diff --git a/src/syslua/lx/tk.lua b/src/syslua/lx/tk.lua
index 3771748..374e260 100644
--- a/src/syslua/lx/tk.lua
+++ b/src/syslua/lx/tk.lua
@@ -19,15 +19,15 @@ function tk.widget(width, height)
 		return nil
 	end
 
-	function w:redraw(x0, y0, w, h)
+	function w:redraw(x0, y0, buf)
 		-- Replaced by widget code by a function that does the actual drawing
 	end
 
-	function w:on_mouse_down(lb, rb, mb)
+	function w:on_mouse_down(x, y, lb, rb, mb)
 		-- Handler for mouse down event
 	end
 
-	function w:on_mouse_up(lb, rb, mb)
+	function w:on_mouse_up(x, y, lb, rb, mb)
 		-- Handler for mouse up event
 	end
 
@@ -51,6 +51,12 @@ function tk.widget(width, height)
 end
 
 function tk.init(gui, root_widget)
+	if tk.root_widget ~= nil then return end
+	tk.root_widget = root_widget
+
+	if root_widget.parent ~= nil then return end
+	root_widget.parent = gui
+	
 	tk.fonts = {
 		default = draw.load_ttf_font("sys:/fonts/vera.ttf")
 	}
@@ -61,28 +67,25 @@ function tk.init(gui, root_widget)
 	gui.on_key_up = function(key) root_widget:on_key_up(key) end
 	gui.on_text_input = function(key) root_widget:on_text_input(char) end
 	gui.on_mouse_move = function(ox, oy, nx, ny) root_widget:on_mouse_move(ox, oy, nx, ny) end
-	gui.on_mouse_down = function(lb, rb, mb) root_widget:on_mouse_down(lb, rb, mb) end
-	gui.on_mouse_up = function(lb, rb, mb) root_widget:on_mouse_up(lb, rb, mb) end
+	gui.on_mouse_down = function(lb, rb, mb) root_widget:on_mouse_down(gui.mouse_x, gui.mouse_y, lb, rb, mb) end
+	gui.on_mouse_up = function(lb, rb, mb) root_widget:on_mouse_up(gui.mouse_x, gui.mouse_y, lb, rb, mb) end
 
 	function root_widget:get_draw_buffer(x0, y0, w, h)
 		return gui.surface:sub(x0, y0, w, h)
 	end
 
-	root_widget:redraw(0, 0, root_widget.width, root_widget.height)
+	root_widget:redraw(0, 0, gui.surface)
 end
 
 function tk.image_widget(img)
 	local image = tk.widget(img:width(), img:height())
 	image.img = img
 
-	function image:redraw(x0, y0, w, h)
-		local buf = self:get_draw_buffer(x0, y0, w, h)
-		if buf == nil then return end
-
+	function image:redraw(x0, y0, buf)
 		local step = 20
 		local halfstep = 10
-		for x = x0 - (x0 % step), x0 + w, step do
-			for y = y0 - (y0 % step), y0 + h, step do
+		for x = x0 - (x0 % step), x0 + buf:width(), step do
+			for y = y0 - (y0 % step), y0 + buf:height(), step do
 				buf:fillrect(x - x0, y - y0, halfstep, halfstep, buf:rgb(150, 150, 150))
 				buf:fillrect(x - x0 + halfstep, y - y0 + halfstep, halfstep, halfstep, buf:rgb(150, 150, 150))
 				buf:fillrect(x - x0 + halfstep, y - y0, halfstep, halfstep, buf:rgb(170, 170, 170))
@@ -95,5 +98,179 @@ function tk.image_widget(img)
 	return image
 end
 
+function tk.wm_widget()
+	local wm = tk.widget(100, 100)
+	wm.windows = {}		-- Last = on top
+
+	function wm:add(content, title, x, y)
+		local win = tk.widget(content.width + 2, content.height + 22)
+		win.parent = self
+		win.x = x or 24
+		win.y = y or 24
+		win.title = title
+		win.visible = true
+		table.insert(self.windows, win)
+
+		win.content = content
+		content.parent = win
+		content.x = 1
+		content.y = 21
+
+		function content:get_draw_buffer(x0, y0, w, h)
+			if x0 + w > self.width then w = self.width - x0 end
+			if y0 + h > self.height then h = self.height - y0 end
+			return win:get_draw_buffer(x0 + 1, y0 + 21, w, h)
+		end
+
+		function win:get_draw_buffer(x0, y0, w, h)
+			-- TODO clipping etc
+		end
+
+		function win:redraw(x0, y0, buf)
+			local xx0 = math.max(x0, 1)
+			local yy0 = math.max(y0, 21)
+
+			local ww, hh = buf:width() - (xx0-x0), buf:height() - (yy0-y0)
+			if xx0-1 + ww > content.width then ww = content.width - xx0+1 end
+			if yy0-21 + ww > content.height then hh = content.height - yy0+21 end
+
+			self.content:redraw(xx0-1, yy0-21, buf:sub(xx0-x0, yy0-y0, ww, hh))
+
+			buf:rect(-x0, -y0, self.width, self.height, buf:rgb(255, 128, 0))
+			buf:fillrect(-x0+1, -y0+1, win.width-2, 20, buf:rgb(200, 200, 200))
+			if win.title then
+				buf:write(-x0+2, -y0+2, win.title, tk.fonts.default, 16, buf:rgb(0, 0, 0))
+			end
+		end
+
+		function win:on_mouse_down(x, y, lb, rb, mb)
+			if y < 22 and lb then
+				self.moving = true
+			else
+				self.content:on_mouse_down(x-1, y-21, lb, rb, mb)
+			end
+		end
+
+		function win:on_mouse_up(x, y, lb, rb, mb)
+			if self.moving then
+				self.moving = false
+			else
+				self.content:on_mouse_up(x-1, y-21, lb, rb, mb)
+			end
+		end
+
+		function win:on_mouse_move(px, py, nx, ny)
+			if self.moving then
+				self.visible = false
+				wm:redraw_win(self)
+				self.x = self.x + nx - px
+				self.y = self.y + ny - py
+				self.visible = true
+				wm:redraw_win(self)
+			else
+				self.content:on_mouse_move(px-1, py-21, px-1, py-21)
+			end
+		end
+
+		self:redraw_win(win)
+	end
+
+	function wm:remove(win)
+		if win.parent ~= self then return end
+		win.parent = nil
+		win.get_draw_buffer = function() return nil end
+
+		win.content.parent = nil
+		win.content.get_draw_buffer = function() return nil end
+
+		for i, w2 in pairs(self.windows) do
+			if w2 == win then
+				table.remove(self.windows, i)
+				return
+			end
+		end
+	end
+
+	function wm:redraw_win(win)
+		local x0, y0 = math.max(0, win.x), math.max(0, win.y)
+		local width = win.x + win.width - x0
+		local height = win.y + win.height - y0
+		self:redraw(x0, y0, self:get_draw_buffer(x0, y0, width, height))
+	end
+
+	function wm:redraw(x0, y0, buf)
+		-- Draw background
+
+		local step = 32
+		local halfstep = 16
+		for x = x0 - (x0 % step), x0 + buf:width(), step do
+			for y = y0 - (y0 % step), y0 + buf:height(), step do
+				buf:fillrect(x - x0, y - y0, halfstep, halfstep, buf:rgb(110, 110, 140))
+				buf:fillrect(x - x0 + halfstep, y - y0 + halfstep, halfstep, halfstep, buf:rgb(110, 110, 140))
+				buf:fillrect(x - x0 + halfstep, y - y0, halfstep, halfstep, buf:rgb(110, 140, 110))
+				buf:fillrect(x - x0, y - y0 + halfstep, halfstep, halfstep, buf:rgb(110, 140, 110))
+			end
+		end
+
+		-- TODO do this in inverse order and clip regions of hidden windows
+		-- so that less redrawing is done
+		for i = 1, #self.windows do
+			win = self.windows[i]
+			if win.visible then
+				local wx0, wy0 = math.max(x0, win.x), math.max(y0, win.y)
+				local ww, wh = win.x + win.width - wx0, win.y + win.height - wy0
+				if ww > 0 and wh > 0 then
+					win:redraw(wx0 - win.x, wy0 - win.y, buf:sub(wx0 - x0, wy0 - y0, ww, wh))
+				end
+			end
+		end
+	end
+
+	function wm:find_win(x, y)
+		for i = #self.windows, 1, -1 do
+			local win = self.windows[i]
+			if win.visible and x >= win.x and y >= win.y and x < win.x + win.width and y < win.y + win.height then
+				return win
+			end
+		end
+		return nil
+	end
+
+	function wm:on_mouse_down(x, y, lb, rb, mb)
+		local on_win = self:find_win(x, y)
+		if on_win then
+			sys.dbg_print(string.format("Mouse down on window %s\n", on_win.title))
+
+			if self.windows[#self.windows] ~= on_win then
+				for i, w in pairs(self.windows) do
+					if w == on_win then
+						table.remove(self.windows, i)
+						break
+					end
+				end
+				table.insert(self.windows, on_win)
+				self:redraw_win(on_win)
+			end
+			on_win:on_mouse_down(x - on_win.x, y - on_win.y, lb, rb, mb)
+		end
+	end
+
+	function wm:on_mouse_up(x, y, lb, rb, mb)
+		local on_win = self:find_win(x, y)
+		if on_win then
+			on_win:on_mouse_up(x - on_win.x, y - on_win.y, lb, rb, mb)
+		end
+	end
+
+	function wm:on_mouse_move(prev_x, prev_y, new_x, new_y)
+		local on_win = self:find_win(prev_x, prev_y)
+		if on_win then
+			on_win:on_mouse_move(prev_x - on_win.x, prev_y - on_win.y, new_x - on_win.x, new_y - on_win.y)
+		end
+	end
+
+	return wm
+end
+
 
 return tk