自定义背景拖入无法识别的格式时会提示

parts/backgrounds/custom.lua

@@ -4,10 +4,12 @@ local back={}
 local image=false
 local alpha=.26
 function back.draw()
-    gc.clear(.1,.1,.1)
-    gc.setColor(1,1,1,alpha)
-    local k=math.max(SCR.w/image:getWidth(),SCR.h/image:getHeight())
-    mDraw(image,SCR.w*.5,SCR.h*.5,nil,k)
+    if image then
+        gc.clear(.1,.1,.1)
+        gc.setColor(1,1,1,alpha)
+        local k=math.max(SCR.w/image:getWidth(),SCR.h/image:getHeight())
+        mDraw(image,SCR.w*.5,SCR.h*.5,nil,k)
+    end
 end
 function back.event(a,img)
     if a then alpha=a end

parts/gameFuncs.lua

@@ -119,13 +119,17 @@ function applyBG()
         BG.lock()
     elseif SETTING.bg=='custom'then
         if love.filesystem.getInfo('conf/customBG')then
-            BG.unlock()
-            BG.set('custom')
-            gc.setDefaultFilter('linear','linear')
-            local image=gc.newImage(love.filesystem.newFile('conf/customBG'))
-            gc.setDefaultFilter('nearest','nearest')
-            BG.send(SETTING.bgAlpha,image)
-            BG.lock()
+            local res,image=pcall(gc.newImage,love.filesystem.newFile('conf/customBG'))
+            if res then
+                BG.unlock()
+                BG.set('custom')
+                gc.setDefaultFilter('linear','linear')
+                BG.send(SETTING.bgAlpha,image)
+                gc.setDefaultFilter('nearest','nearest')
+                BG.lock()
+            else
+                MES.new('error',text.customBGloadFailed)
+            end
         else
             SETTING.bg='off'
             applyBG()

parts/language/lang_en.lua

@@ -139,6 +139,7 @@ return{
 
     keySettingInstruction="Press to bind key\nescape: cancel\nbackspace: delete",
     customBGhelp="Drop image file here to apply custom background",
+    customBGloadFailed="Unsupport image format for custom background",
 
     errorMsg="Techmino ran into a problem and needs to restart.\nYou can send the error log to the developers.",
     tryAnotherBuild="[Invalid UTF-8] If you are on Windows, try downloading Techmino-win32 or Techmino-win64 (different from what you are using now).",

parts/language/lang_es.lua

@@ -128,6 +128,7 @@ return{
 
     -- keySettingInstruction="Press to bind key\nescape: cancel\nbackspace: delete",
     -- customBGhelp="Drop image file here to apply custom background",
+    -- customBGloadFailed="Unsupport image format for custom background",
 
     errorMsg="Ha ocurrido un error y Techmino necesita reiniciarse.\nSe creó un registro de error, puedes enviarlo al autor.",
     -- tryAnotherBuild="[Invalid UTF-8] If you are on Windows, try downloading Techmino-win32 or Techmino-win64 (different from what you are using now).",

parts/language/lang_fr.lua

@@ -129,6 +129,7 @@ return{
 
     -- keySettingInstruction="Press to bind key\nescape: cancel\nbackspace: delete",
     -- customBGhelp="Drop image file here to apply custom background",
+    -- customBGloadFailed="Unsupport image format for custom background",
 
     errorMsg="Une erreur est survenue et Techmino doit redémarrer.\nDes informations concernant l'erreur ont été créées, et vous pouvez les envoyer au créateur.",
     -- tryAnotherBuild="[Invalid UTF-8] If you are on Windows, try downloading Techmino-win32 or Techmino-win64 (different from what you are using now).",

parts/language/lang_pt.lua

@@ -127,6 +127,7 @@ return{
 
     -- keySettingInstruction="Press to bind key\nescape: cancel\nbackspace: delete",
     -- customBGhelp="Drop image file here to apply custom background",
+    -- customBGloadFailed="Unsupport image format for custom background",
 
     errorMsg="Um erro ocorreu e Techmino precisa reiniciar.\nInformação do erro foi criada, e você pode mandar ao autor.",
     -- tryAnotherBuild="[Invalid UTF-8] If you are on Windows, try downloading Techmino-win32 or Techmino-win64 (different from what you are using now).",

parts/language/lang_zh.lua

@@ -139,6 +139,7 @@ return{
 
     keySettingInstruction="点击添加键位绑定\nesc取消选中\n退格键清空选中",
     customBGhelp="把图片文件拖到这个窗口里使用自定义背景",
+    customBGloadFailed="自定义背景的图片文件格式不支持",
 
     errorMsg="Techmino遭受了雷击，需要重新启动。\n我们已收集了一些错误信息，你可以向作者进行反馈。",
     tryAnotherBuild="[解码UTF-8错误] 如果你现在用的是Windows系统，请重新下载 Techmino-32位 或者 Techmino-64位 (和现在运行的不一样的那个)。",

parts/language/lang_zh_grass.lua

@@ -137,6 +137,7 @@ return{
 
     keySettingInstruction="按绑定键\n退出:取消\n退格:删除",
     customBGhelp="将图像文件拖放到此处以应用自定义背景",
+    customBGloadFailed="不支持自定义背景的图像格式",
 
     errorMsg="技术米诺遇到问题，需要重新启动。\n您可以将错误日志发送给开发人员。",
     tryAnotherBuild="[无效UTF-8]如果您在Windows上，请尝试下载Techmino-win32或Techmino-win64(与您现在使用的不同)",

parts/language/lang_zh_trad.lua

@@ -139,6 +139,7 @@ return{
 
     keySettingInstruction="點擊來設置鍵位\n按esc來取消選中\n按退格鍵來清除選中",
     customBGhelp="把圖片檔案拖到這個視窗裏使用自定義背景",
+    customBGloadFailed="自定義背景的圖片檔案格式不支持",
 
     errorMsg="Techmino遇到問題，需要重新啟動。\n我們已經收集了一些錯誤信息，你可以反饋給作者。",
     tryAnotherBuild="[無效的 UTF-8] 如果你使用的是Windows作業系統，請嘗試下載Techmino-win32或Techmino-win64（與你現在使用的不同的版本）。",

parts/scenes/setting_video.lua

@@ -8,9 +8,13 @@ end
 
 
 function scene.fileDropped(file)
-    love.filesystem.write('conf/customBG',file:read('data'))
-    SETTING.bg='custom'
-    applyBG()
+    if pcall(gc.newImage,file)then
+        love.filesystem.write('conf/customBG',file:read('data'))
+        SETTING.bg='custom'
+        applyBG()
+    else
+        MES.new('error',text.customBGloadFailed)
+    end
 end
 
 local fakeBlock={{true}}