ui:SetScale(1.25) Crash App

[Yue]

The command when put in an event or in a main loop crashes the application. It is to change the size of the Ui in real time.


 

  elseif ev.source == _cmbBixUIScale then
                    UpdateApplyButton()
                    ui:SetScale(1.25) --<<< crash app.
              
                elseif ev.source == _tabOptions then

 

[Josh]

Here is an example that shows it working:

-- Get the displays
local displays = GetDisplays()

-- Create window
local window = CreateWindow("Ultra Engine", 0, 0, 800, 600, displays[1], WINDOW_TITLEBAR | WINDOW_RESIZABLE)
window:SetMinSize(640, 480)

-- Create user interface
local ui = CreateInterface(window)

-- Create widgets
local sz = ui.background:ClientSize()

local leftpanel = CreatePanel(10, 10, 200, sz.y - 20, ui.background)
leftpanel:SetLayout(1, 0, 1, 1)
leftpanel:SetColor(0, 0, 0, 1)

local rightpanel = CreatePanel(sz.x - 10 - 200, 10, 200, sz.y - 20, ui.background)
rightpanel:SetLayout(0, 1, 1, 1)
rightpanel:SetColor(0, 0, 0, 1)

local mainpanel = CreatePanel(10 + 200 + 10, 10, sz.x - 10 * 4 - 200 * 2, sz.y - 10 * 3 - 100, ui.background)
mainpanel:SetLayout(1, 1, 1, 1)
mainpanel:SetColor(0, 0, 0, 1)

local bottompanel = CreatePanel(10 + 200 + 10, sz.y - 10 - 100, sz.x - 10 * 4 - 200 * 2, 100, ui.background)
bottompanel:SetLayout(1, 1, 0, 1)
bottompanel:SetColor(0, 0, 0, 1)

while true do
    local ev = WaitEvent()
	if ev.id == EVENT_KEYDOWN and ev.data == KEY_SPACE then
		ui:SetScale(1.25)
	end	
    if ev.id == EVENT_WINDOWCLOSE and ev.source == window then
        break
    end
end

 

[Josh]

Here is another working example that uses 3D rendering:

--Get the displays
local displays = GetDisplays()

--Create window
local window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[1])

--Create framebuffer
local framebuffer = CreateFramebuffer(window)

--Create world
local world = CreateWorld()

--Create camera
local camera = CreateCamera(world, PROJECTION_ORTHOGRAPHIC)
camera:SetPosition(framebuffer.size.x * 0.5, framebuffer.size.y * 0.5, 0)

--Load a font
local font = LoadFont("Fonts/arial.ttf")

--Create user interface
local ui = CreateInterface(camera, font, framebuffer.size)

--Create widget
local sz = ui.background:ClientSize()
local button = CreateButton("Button", sz.x / 2 - 75, sz.y / 2 - 15, 150, 30, ui.background)

while not window:KeyDown(KEY_ESCAPE) do
    while (PeekEvent()) do
        local ev = WaitEvent()
		if ev.id == EVENT_KEYDOWN and ev.data == KEY_SPACE then
			ui:SetScale(1.25)
		end
        if (ev.id == EVENT_WINDOWCLOSE and ev.source == window) then
            return 0
        else
            ui:ProcessEvent(ev)
        end
    end

    world:Update()
    world:Render(framebuffer)
end