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116 lines
4.4 KiB
Plaintext
116 lines
4.4 KiB
Plaintext
The [[$RESIZE]] [[Metacommand|metacommand]] determines if a program window can be resized by the user.
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{{PageSyntax}}
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: [[$RESIZE]]:{ON|OFF|STRETCH|SMOOTH}
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{{PageDescription}}
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* $RESIZE:ON is used to allow the program window to be resized by a program user. Otherwise it cannot be changed.
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* $RESIZE:OFF ('''default''') is used when the program's window size cannot be changed by the user.
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* $RESIZE:STRETCH the screen will be stretched to fit the new window size with a 1 to 1 ratio of width and height.
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* $RESIZE:SMOOTH the screen will be stretched also, but with linear filtering applied to the pixels.
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==Availability==
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* '''Version 1.000 and up'''.
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{{PageExamples}}
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''Example:'' Resizing a program screen when the user changes it without clearing the entire screen image:
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{{CodeStart}}
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{{Cl|$RESIZE}}:ON
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{{Cl|SCREEN}} {{Cl|_NEWIMAGE}}(160, 140, 32)
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{{Cl|_DELAY}} 0.1
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{{Cl|_SCREENMOVE}} 20, 20
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{{Cl|_DISPLAY}}
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' CLEAR _RESIZE FLAG BY READING IT ONCE
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temp& = {{Cl|_RESIZE (function)|_RESIZE}}
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DO
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{{Cl|_LIMIT}} 60
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{{Cl|IF...THEN|IF}} CheckResize({{Cl|_SOURCE}}) = -1 {{Cl|THEN}}
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{{Cl|FOR...NEXT|FOR}} i = 1 {{Cl|TO}} 10
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{{Cl|CIRCLE}} ({{Cl|RND}} * {{Cl|_WIDTH (function)|_WIDTH}}(0) - 1, {{Cl|RND}} * {{Cl|_HEIGHT}}(0) - 1), {{Cl|RND}} * 100 + 5, {{Cl|_RGB32}}({{Cl|RND}} * 255, {{Cl|RND}} * 255, {{Cl|RND}} * 255)
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{{Cl|NEXT}}
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{{Cl|ELSE}}
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{{Cl|FOR...NEXT|FOR}} i = 1 {{Cl|TO}} 200
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{{Cl|PSET}} ({{Cl|RND}} * {{Cl|_WIDTH (function)|_WIDTH}}(0) - 1, {{Cl|RND}} * {{Cl|_HEIGHT}}(0) - 1), {{Cl|_RGB32}}({{Cl|RND}} * 255, {{Cl|RND}} * 255, {{Cl|RND}} * 255)
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{{Cl|NEXT}}
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{{Cl|END IF}}
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{{Cl|_DISPLAY}}
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k& = {{Cl|_KEYHIT}}
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{{Cl|LOOP}} {{Cl|UNTIL}} k& = 27 {{Cl|OR (boolean)|OR}} k& = 32
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{{Cl|SYSTEM}}
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' *************************************************************************************************
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' * *
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' * CheckResize: This FUNCTION checks if the user resized the window, and if so, recreates the *
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' * ORIGINAL SCREEN image to the new window size. *
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' * *
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' * Developer Note: You must use $RESIZE:ON, $RESIZE:SMOOTH, or $RESIZE:SMOOTH at *
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' * the beginning of your project for this to work. *
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' * This FUNCTION only works in QB64 version 1.000 and up. *
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' * *
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' *************************************************************************************************
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{{Cl|FUNCTION}} CheckResize (CurrentScreen {{Cl|AS}} {{Cl|_UNSIGNED}} {{Cl|LONG}})
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' *** Define local variable for temporary screen
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{{Cl|DIM}} TempScreen {{Cl|AS}} {{Cl|_UNSIGNED}} {{Cl|LONG}}
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CheckResize = 0
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' *** Check to see if the user resized the window. If so, change the SCREEN image to the correct size.
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{{Cl|IF...THEN|IF}} {{Cl|_RESIZE (function)|_RESIZE}} {{Cl|THEN}}
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' *** First, create a copy of the current {{Cl|SCREEN}} image.
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TempScreen = {{Cl|_COPYIMAGE}}(CurrentScreen, 32)
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' *** Set the {{Cl|SCREEN}} to the copied image, releasing the current SCREEN image.
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{{Cl|SCREEN}} TempScreen
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' *** Remove ({{Cl|TIMER (statement)|FREE}}) the original {{Cl|SCREEN}} image.
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{{Cl|_FREEIMAGE}} CurrentScreen
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' *** Create a new "original" {{Cl|SCREEN}} image.
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CurrentScreen = {{Cl|_NEWIMAGE}}({{Cl|_RESIZEWIDTH}}, {{Cl|_RESIZEHEIGHT}}, 32)
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' *** Set the {{Cl|SCREEN}} to the new "original" image, releasing the copied {{Cl|SCREEN}} image.
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{{Cl|SCREEN}} CurrentScreen
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' {{Cl|DRAW}} PREVIOUS {{Cl|SCREEN}} ON THE NEW ONE
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{{Cl|_PUTIMAGE}} (0, 0), TempScreen, CurrentScreen
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{{Cl|_DISPLAY}}
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' *** Remove ({{Cl|TIMER (statement)|FREE}}) the copied {{Cl|SCREEN}} image.
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{{Cl|_FREEIMAGE}} TempScreen
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' *** Tell the caller there was a resize
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CheckResize = -1
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{{Cl|END IF}}
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{{Cl|END FUNCTION}}
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{{CodeEnd}}{{small|Code by waltersmind}}
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{{PageSeeAlso}}
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* [[_RESIZE]], [[_RESIZE (function)]]
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* [[_RESIZEWIDTH]], [[_RESIZEHEIGHT]] {{text|(functions return the requested dimensions)}}
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{{PageNavigation}}
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