func TestContainer_RemoveWidget(t *testing.T) {
c := new(Container)
fake_1 := &fakeWidget{}
fake_1.draw = func() *sdl.Surface {
return sdl.CreateRGBSurface(0, 10, 5, 32, 0, 0, 0, 0)
}
c.Add(fake_1)
fake_2 := &fakeWidget{}
fake_2.draw = func() *sdl.Surface {
return sdl.CreateRGBSurface(0, 5, 10, 32, 0, 0, 0, 0)
}
c.Add(fake_2)
c.Remove(fake_1)
surface := c.Draw()
defer surface.Free()
if surface.W != 5 {
t.Errorf("expected surface width to be %d, but was %d", 5, surface.W)
}
if surface.H != 10 {
t.Errorf("expected surface height to be %d, but was %d", 10, surface.H)
}
}
func TestContainer_PackNone(t *testing.T) {
c := &Container{Pack: PackNone}
fake_1 := &fakeWidget{}
fake_1.draw = func() *sdl.Surface {
return sdl.CreateRGBSurface(0, 10, 5, 32, 0, 0, 0, 0)
}
c.AddWithPosition(fake_1, 0, 10)
fake_2 := &fakeWidget{}
fake_2.draw = func() *sdl.Surface {
return sdl.CreateRGBSurface(0, 5, 10, 32, 0, 0, 0, 0)
}
c.AddWithPosition(fake_2, 10, 0)
surface := c.Draw()
if surface == nil {
t.Fatal("surface was nil")
}
defer surface.Free()
if surface.W != 15 {
t.Errorf("expected surface width to be %d, but was %d", 15, surface.W)
}
if surface.H != 15 {
t.Errorf("expected surface height to be %d, but was %d", 15, surface.H)
}
}
func NewImageWithColor(color uint32, w int, h int) (image *Image) {
surface := sdl.CreateRGBSurface(0, w, h, 32, 0, 0, 0, 0)
surface.FillRect(nil, color)
image = &Image{surface}
return
}
func TestContainer_Handle(t *testing.T) {
for testNum, tt := range eventTests {
// setup
c := &Container{Pack: tt.pack}
var handled [2][]interface{}
child_1 := &fakeWidget{}
child_1.draw = func() *sdl.Surface {
return sdl.CreateRGBSurface(0, 10, 5, 32, 0, 0, 0, 0)
}
child_1.handle = func(event interface{}) bool {
handled[0] = append(handled[0], event)
return true
}
c.Add(child_1)
child_2 := &fakeWidget{}
child_2.draw = func() *sdl.Surface {
return sdl.CreateRGBSurface(0, 5, 10, 32, 0, 0, 0, 0)
}
child_2.handle = func(event interface{}) bool {
handled[1] = append(handled[1], event)
return true
}
c.Add(child_2)
surface := c.Draw()
defer surface.Free()
// send event
if !c.Handle(tt.event) {
t.Errorf("test %d: expected event to be handled, but wasn't", testNum)
}
if len(handled[tt.handledBy]) != 1 {
t.Errorf("test %d: widget %d didn't handle the event", testNum, tt.handledBy)
} else if event := handled[tt.handledBy][0]; event != tt.expectedEvent {
t.Errorf("test %d: expected %+v, got %+v", testNum, tt.expectedEvent, event)
}
}
}
func TestWindow(t *testing.T) {
c := &Container{}
fake := &fakeWidget{}
fake.draw = func() *sdl.Surface {
return sdl.CreateRGBSurface(0, 10, 5, 32, 0, 0, 0, 0)
}
c.Add(fake)
win, err := NewWindow(c, 20, 20)
if err != nil {
t.Fatal(err)
}
defer win.Free()
win.Draw()
}
func TestContainer_Draw_OneWidget(t *testing.T) {
c := &Container{}
fake := &fakeWidget{}
fake.draw = func() *sdl.Surface {
return sdl.CreateRGBSurface(0, 10, 5, 32, 0, 0, 0, 0)
}
c.Add(fake)
surface := c.Draw()
defer surface.Free()
if surface.W != 10 {
t.Errorf("expected surface width to be %d, but was %d", 10, surface.W)
}
if surface.H != 5 {
t.Errorf("expected surface height to be %d, but was %d", 5, surface.H)
}
}
func CreateSurface(hw bool, display_format bool, x, y uint16) (*sdl.Surface, error) {
var flags uint32 = 0
if hw {
flags = sdl.HWSURFACE
} else {
flags = sdl.SWSURFACE
}
surface := sdl.CreateRGBSurface(flags, int(x), int(y), 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000)
if surface == nil {
return nil, fmt.Errorf("Failed to load texture: %s", sdl.GetError())
}
if display_format {
surface = surface.DisplayFormat()
if surface == nil {
return nil, fmt.Errorf("Failed to convert texture: %s", sdl.GetError())
}
}
return surface, nil
}
func (img *Image) Draw() *sdl.Surface {
surface := sdl.CreateRGBSurface(0, int(img.image.W), int(img.image.H), 32, 0, 0, 0, 0)
surface.Blit(nil, img.image, nil)
return surface
}
func (c *Container) Draw() (result *sdl.Surface) {
var (
surfaces []*sdl.Surface
w, h int16
)
// determine surface dimensions
c.mutex.Lock()
for _, child := range c.Children {
surface := child.Widget.Draw()
child.W = int16(surface.W)
child.H = int16(surface.H)
surfaces = append(surfaces, surface)
switch c.Pack {
case PackLayer:
child.X = 0
if child.W > w {
w = child.W
}
child.Y = 0
if child.H > h {
h = child.H
}
case PackHorizontal:
child.X = w
w += child.W
child.Y = 0
if child.H > h {
h = child.H
}
case PackVertical:
child.X = 0
if child.W > w {
w = child.W
}
child.Y = h
h += child.H
case PackNone:
// X and Y coordinates are fixed
if (child.X + child.W) > w {
w = child.X + child.W
}
if (child.Y + child.H) > h {
h = child.Y + child.H
}
}
}
c.mutex.Unlock()
// blit surfaces
if w > 0 && h > 0 {
result = sdl.CreateRGBSurface(0, int(w), int(h), 32, 0, 0, 0, 0)
rect := new(sdl.Rect)
for i, surface := range surfaces {
placement := c.Children[i]
rect.X = placement.X
rect.Y = placement.Y
result.Blit(rect, surface, nil)
surface.Free()
}
}
return
}