ebiten/internal/ui/ui_mobile.go
2016-07-04 01:25:35 +09:00

122 lines
2.6 KiB
Go

// Copyright 2016 Hajime Hoshi
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build android ios darwin,arm darwin,arm64
package ui
import (
"errors"
"runtime"
"time"
"github.com/hajimehoshi/ebiten/internal/graphics/opengl"
)
func initialize() (*opengl.Context, error) {
return opengl.NewContext()
}
func Main() error {
return errors.New("ui: don't call this: use RunWithoutMainLoop instead of Run")
}
func Render(chError <-chan error) error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
if chError == nil {
return errors.New("ui: chError must not be nil")
}
// TODO: Check this is called on the rendering thread
select {
case chRender <- struct{}{}:
return glContext.DoWork(chError, chRenderEnd)
case <-time.After(500 * time.Millisecond):
// This function must not be blocked. We need to break for timeout.
return nil
}
}
type userInterface struct {
width int
height int
scale float64
sizeChanged bool
}
var (
chRender = make(chan struct{})
chRenderEnd = make(chan struct{})
currentUI = &userInterface{
sizeChanged: true,
}
)
func CurrentUI() UserInterface {
return currentUI
}
func (u *userInterface) Start(width, height int, scale float64, title string) error {
u.width = width
u.height = height
u.scale = scale
// title is ignored?
return nil
}
func (u *userInterface) Terminate() error {
return nil
}
func (u *userInterface) Update() (interface{}, error) {
if u.sizeChanged {
u.sizeChanged = false
e := ScreenSizeEvent{
Width: u.width,
Height: u.height,
ActualScale: u.actualScreenScale(),
}
return e, nil
}
<-chRender
return RenderEvent{chRenderEnd}, nil
}
func (u *userInterface) SwapBuffers() error {
return nil
}
func (u *userInterface) SetScreenSize(width, height int) bool {
// TODO: Implement
return false
}
func (u *userInterface) SetScreenScale(scale float64) bool {
// TODO: Implement
return false
}
func (u *userInterface) ScreenScale() float64 {
return u.scale
}
func (u *userInterface) actualScreenScale() float64 {
return u.scale * deviceScale()
}
func UpdateTouches(touches []Touch) {
currentInput.updateTouches(touches)
}