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Annotation of Examples/AppKit/Draw/DrawPageLayout.m, revision 1.1.1.1

1.1       root        1: #import "draw.h"
                      2: 
                      3: @implementation DrawPageLayout
                      4: /*
                      5:  * PageLayout is overridden so that the user can set the margins of
                      6:  * the page.  This is important in a Draw program where the user
                      7:  * typically wants to maximize the drawable area on the page.
                      8:  *
                      9:  * The accessory view is used to add the additional fields, and
                     10:  * pickedUnits: is overridden so that the margin is displayed in the
                     11:  * currently selected units.  Note that the accessoryView is set
                     12:  * in InterfaceBuilder using the outlet mechanism!
                     13:  *
                     14:  * This can be used as an example of how to override Application Kit panels.
                     15:  */
                     16: 
                     17: - pickedUnits:sender
                     18: /*
                     19:  * Called when the user selects different units (e.g. cm or inches).
                     20:  * Must update the margin fields.
                     21:  */
                     22: {
                     23:     float old, new;
                     24: 
                     25:     [self convertOldFactor:&old newFactor:&new];
                     26:     [leftMargin setFloatValue:new * [leftMargin floatValue] / old];
                     27:     [rightMargin setFloatValue:new * [rightMargin floatValue] / old];
                     28:     [topMargin setFloatValue:new * [topMargin floatValue] / old];
                     29:     [bottomMargin setFloatValue:new * [bottomMargin floatValue] / old];
                     30: 
                     31:     return [super pickedUnits:sender];
                     32: }
                     33: 
                     34: - readPrintInfo
                     35: /*
                     36:  * Sets the margin fields from the Application-wide PrintInfo.
                     37:  */
                     38: {
                     39:     PrintInfo *pi;
                     40:     float conversion, dummy;
                     41:     NXCoord left, right, top, bottom;
                     42: 
                     43:     [super readPrintInfo];
                     44:     pi = [NXApp printInfo];
                     45:     [self convertOldFactor:&conversion newFactor:&dummy];
                     46:     [pi getMarginLeft:&left right:&right top:&top bottom:&bottom];
                     47:     [leftMargin setFloatValue:left * conversion];
                     48:     [rightMargin setFloatValue:right * conversion];
                     49:     [topMargin setFloatValue:top * conversion];
                     50:     [bottomMargin setFloatValue:bottom * conversion];
                     51: 
                     52:     return self;
                     53: }
                     54: 
                     55: - writePrintInfo
                     56: /*
                     57:  * Sets the margin values in the Application-wide PrintInfo from
                     58:  * the margin fields in the panel.
                     59:  */
                     60: {
                     61:     PrintInfo *pi;
                     62:     float conversion, dummy;
                     63: 
                     64:     [super writePrintInfo];
                     65:     pi = [NXApp printInfo];
                     66:     [self convertOldFactor:&conversion newFactor:&dummy];
                     67:     if (conversion) {
                     68:        [pi setMarginLeft:[leftMargin floatValue] / conversion
                     69:                    right:[rightMargin floatValue] / conversion
                     70:                      top:[topMargin floatValue] / conversion
                     71:                   bottom:[bottomMargin floatValue] / conversion];
                     72:     }
                     73: 
                     74:     return self;
                     75: }
                     76: 
                     77: /* outlet setting methods */
                     78: 
                     79: - setTopBotForm:anObject
                     80: {
                     81:     [anObject setTarget:ok];
                     82:     [anObject setAction:@selector(performClick:)];
                     83:     [anObject setNextText:width];
                     84:     topMargin = [anObject findCellWithTag:5];
                     85:     bottomMargin = [anObject findCellWithTag:6];
                     86:     return self;
                     87: }
                     88: 
                     89: - setSideForm:anObject
                     90: {
                     91:     [scale setNextText:anObject];
                     92:     [anObject setTarget:ok];
                     93:     [anObject setAction:@selector(performClick:)];
                     94:     leftMargin = [anObject findCellWithTag:3];
                     95:     rightMargin = [anObject findCellWithTag:4];
                     96:     return self;
                     97: }
                     98: 
                     99: @end
                    100: 

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