mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 04:57:26 +01:00
134 lines
3.2 KiB
Go
134 lines
3.2 KiB
Go
// Copyright 2022 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ui
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import (
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"errors"
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"image"
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"github.com/hajimehoshi/ebiten/v2/internal/atlas"
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"github.com/hajimehoshi/ebiten/v2/internal/mipmap"
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)
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// RegularTermination represents a regular termination.
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// Run can return this error, and if this error is received,
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// the game loop should be terminated as soon as possible.
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var RegularTermination = errors.New("regular termination")
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type FPSModeType int
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const (
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FPSModeVsyncOn FPSModeType = iota
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FPSModeVsyncOffMaximum
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FPSModeVsyncOffMinimum
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)
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type CursorMode int
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const (
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CursorModeVisible CursorMode = iota
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CursorModeHidden
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CursorModeCaptured
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)
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type CursorShape int
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const (
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CursorShapeDefault CursorShape = iota
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CursorShapeText
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CursorShapeCrosshair
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CursorShapePointer
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CursorShapeEWResize
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CursorShapeNSResize
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CursorShapeNESWResize
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CursorShapeNWSEResize
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CursorShapeMove
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CursorShapeNotAllowed
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)
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type WindowResizingMode int
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const (
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WindowResizingModeDisabled WindowResizingMode = iota
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WindowResizingModeOnlyFullscreenEnabled
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WindowResizingModeEnabled
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)
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type UserInterface struct {
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whiteImage *Image
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userInterfaceImpl
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}
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var (
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theUI *UserInterface
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)
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func init() {
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// newUserInterface() must be called in the main goroutine.
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u, err := newUserInterface()
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if err != nil {
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panic(err)
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}
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theUI = u
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}
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func Get() *UserInterface {
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return theUI
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}
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// newUserInterface must be called from the main thread.
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func newUserInterface() (*UserInterface, error) {
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u := &UserInterface{}
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u.whiteImage = u.NewImage(3, 3, atlas.ImageTypeRegular)
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pix := make([]byte, 4*u.whiteImage.width*u.whiteImage.height)
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for i := range pix {
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pix[i] = 0xff
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}
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// As a white image is used at Fill, use WritePixels instead.
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u.whiteImage.WritePixels(pix, image.Rect(0, 0, u.whiteImage.width, u.whiteImage.height))
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if err := u.init(); err != nil {
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return nil, err
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}
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return u, nil
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}
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func (u *UserInterface) readPixels(mipmap *mipmap.Mipmap, pixels []byte, region image.Rectangle) error {
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return mipmap.ReadPixels(u.graphicsDriver, pixels, region)
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}
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func (u *UserInterface) dumpScreenshot(mipmap *mipmap.Mipmap, name string, blackbg bool) (string, error) {
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return mipmap.DumpScreenshot(u.graphicsDriver, name, blackbg)
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}
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func (u *UserInterface) dumpImages(dir string) (string, error) {
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return atlas.DumpImages(u.graphicsDriver, dir)
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}
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type RunOptions struct {
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GraphicsLibrary GraphicsLibrary
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InitUnfocused bool
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ScreenTransparent bool
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SkipTaskbar bool
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}
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// InitialWindowPosition returns the position for centering the given second width/height pair within the first width/height pair.
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func InitialWindowPosition(mw, mh, ww, wh int) (x, y int) {
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return (mw - ww) / 2, (mh - wh) / 3
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}
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