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ui: Set window width limitation for Windows (#165)

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This commit is contained in:
Hajime Hoshi 2016-03-22 11:56:40 +09:00
parent 4bf3b4e44e
commit 993a55abde
1 changed files with 18 additions and 4 deletions
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22
internal/ui/ui_glfw.go
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@ -17,6 +17,7 @@
package ui
import (
"errors"
"fmt"
"runtime"
"time"
@ -125,7 +126,9 @@ func (u *userInterface) start(width, height, scale int, title string) error {
}
}
u.setScreenSize(width, height, scale)
if !u.setScreenSize(width, height, scale) {
return errors.New("ui: Fail to set the screen size")
}
u.window.SetTitle(title)
u.window.Show()
@ -189,10 +192,21 @@ func (u *userInterface) setScreenSize(width, height, scale int) bool {
if u.width == width && u.height == height && u.scale == scale {
return false
}
// These properties should be set first since this affects windowScale().
// u.scale should be set first since this affects windowScale().
origScale := u.scale
u.scale = scale
// On Windows, giving a too small width doesn't call a callback (#165).
// To prevent hanging up, return asap if the width is too small.
// 252 is an arbitrary number and I guess this is small enough.
const minWindowWidth = 252
if width*u.windowScale() < minWindowWidth {
u.scale = origScale
return false
}
u.width = width
u.height = height
u.scale = scale
// To make sure the current existing framebuffers are rendered,
// swap buffers here before SetSize is called.
@ -200,7 +214,7 @@ func (u *userInterface) setScreenSize(width, height, scale int) bool {
ch := make(chan struct{})
window := u.window
window.SetFramebufferSizeCallback(func(w *glfw.Window, width, height int) {
window.SetFramebufferSizeCallback(func(_ *glfw.Window, width, height int) {
window.SetFramebufferSizeCallback(nil)
close(ch)
})