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MMAtsuiTextView.m
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MMAtsuiTextView.m
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/* vi:set ts=8 sts=4 sw=4 ft=objc:
*
* VIM - Vi IMproved by Bram Moolenaar
* MacVim GUI port by Bjorn Winckler
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* MMAtsuiTextView
*
* Dispatches keyboard and mouse input to the backend. Handles drag-n-drop of
* files onto window. The rendering is done using ATSUI.
*
* The text view area consists of two parts:
* 1. The text area - this is where text is rendered; the size is governed by
* the current number of rows and columns.
* 2. The inset area - this is a border around the text area; the size is
* governed by the user defaults MMTextInset[Left|Right|Top|Bottom].
*
* The current size of the text view frame does not always match the desired
* area, i.e. the area determined by the number of rows, columns plus text
* inset. This distinction is particularly important when the view is being
* resized.
*/
#import "MMAppController.h"
#import "MMAtsuiTextView.h"
#import "MMTextViewHelper.h"
#import "MMVimController.h"
#import "MMWindowController.h"
#if MM_ENABLE_ATSUI
// TODO: What does DRAW_TRANSP flag do? If the background isn't drawn when
// this flag is set, then sometimes the character after the cursor becomes
// blank. Everything seems to work fine by just ignoring this flag.
#define DRAW_TRANSP 0x01 /* draw with transparant bg */
#define DRAW_BOLD 0x02 /* draw bold text */
#define DRAW_UNDERL 0x04 /* draw underline text */
#define DRAW_UNDERC 0x08 /* draw undercurl text */
#define DRAW_ITALIC 0x10 /* draw italic text */
#define DRAW_CURSOR 0x20
#define DRAW_WIDE 0x40 /* draw wide text */
#define kUnderlineOffset (-2)
#define kUnderlineHeight 1
#define kUndercurlHeight 2
#define kUndercurlOffset (-2)
#define kUndercurlDotWidth 2
#define kUndercurlDotDistance 2
@interface NSFont (AppKitPrivate)
- (ATSUFontID) _atsFontID;
@end
@interface MMAtsuiTextView (Private)
- (void)initAtsuStyles;
- (void)disposeAtsuStyles;
- (void)updateAtsuStyles;
- (MMWindowController *)windowController;
- (MMVimController *)vimController;
@end
@interface MMAtsuiTextView (Drawing)
- (NSPoint)originForRow:(int)row column:(int)column;
- (NSRect)rectFromRow:(int)row1 column:(int)col1
toRow:(int)row2 column:(int)col2;
- (NSSize)textAreaSize;
- (void)resizeContentImage;
- (void)beginDrawing;
- (void)endDrawing;
- (void)drawString:(UniChar *)string length:(UniCharCount)length
atRow:(int)row column:(int)col cells:(int)cells
withFlags:(int)flags foregroundColor:(NSColor *)fg
backgroundColor:(NSColor *)bg specialColor:(NSColor *)sp;
- (void)deleteLinesFromRow:(int)row lineCount:(int)count
scrollBottom:(int)bottom left:(int)left right:(int)right
color:(NSColor *)color;
- (void)insertLinesAtRow:(int)row lineCount:(int)count
scrollBottom:(int)bottom left:(int)left right:(int)right
color:(NSColor *)color;
- (void)clearBlockFromRow:(int)row1 column:(int)col1 toRow:(int)row2
column:(int)col2 color:(NSColor *)color;
- (void)clearAll;
- (void)drawInsertionPointAtRow:(int)row column:(int)col shape:(int)shape
fraction:(int)percent;
- (void)drawInvertedRectAtRow:(int)row column:(int)col numRows:(int)nrows
numColumns:(int)ncols;
@end
static float
defaultLineHeightForFont(NSFont *font)
{
// HACK: -[NSFont defaultLineHeightForFont] is deprecated but since the
// ATSUI renderer does not use NSLayoutManager we create one temporarily.
NSLayoutManager *lm = [[NSLayoutManager alloc] init];
float height = [lm defaultLineHeightForFont:font];
[lm release];
return height;
}
@implementation MMAtsuiTextView
- (id)initWithFrame:(NSRect)frame
{
if (!(self = [super initWithFrame:frame]))
return nil;
// NOTE! It does not matter which font is set here, Vim will set its
// own font on startup anyway. Just set some bogus values.
font = [[NSFont userFixedPitchFontOfSize:0] retain];
ascender = 0;
cellSize.width = cellSize.height = 1;
contentImage = nil;
imageSize = NSZeroSize;
insetSize = NSZeroSize;
// NOTE: If the default changes to 'NO' then the intialization of
// p_antialias in option.c must change as well.
antialias = YES;
helper = [[MMTextViewHelper alloc] init];
[helper setTextView:self];
[self initAtsuStyles];
[self registerForDraggedTypes:[NSArray arrayWithObjects:
NSFilenamesPboardType, NSStringPboardType, nil]];
return self;
}
- (void)dealloc
{
ASLogDebug(@"");
[self disposeAtsuStyles];
[font release]; font = nil;
[fontWide release]; fontWide = nil;
[defaultBackgroundColor release]; defaultBackgroundColor = nil;
[defaultForegroundColor release]; defaultForegroundColor = nil;
[helper setTextView:nil];
[helper release]; helper = nil;
[super dealloc];
}
- (int)maxRows
{
return maxRows;
}
- (int)maxColumns
{
return maxColumns;
}
- (void)getMaxRows:(int*)rows columns:(int*)cols
{
if (rows) *rows = maxRows;
if (cols) *cols = maxColumns;
}
- (void)setMaxRows:(int)rows columns:(int)cols
{
// NOTE: Just remember the new values, the actual resizing is done lazily.
maxRows = rows;
maxColumns = cols;
}
- (void)setDefaultColorsBackground:(NSColor *)bgColor
foreground:(NSColor *)fgColor
{
if (defaultBackgroundColor != bgColor) {
[defaultBackgroundColor release];
defaultBackgroundColor = bgColor ? [bgColor retain] : nil;
}
if (defaultForegroundColor != fgColor) {
[defaultForegroundColor release];
defaultForegroundColor = fgColor ? [fgColor retain] : nil;
}
}
- (NSColor *)defaultBackgroundColor
{
return defaultBackgroundColor;
}
- (NSColor *)defaultForegroundColor
{
return defaultForegroundColor;
}
- (void)setTextContainerInset:(NSSize)size
{
insetSize = size;
}
- (NSRect)rectForRowsInRange:(NSRange)range
{
// Compute rect whose vertical dimensions cover the rows in the given
// range.
// NOTE: The rect should be in _flipped_ coordinates and the first row must
// include the top inset as well. (This method is only used to place the
// scrollbars inside MMVimView.)
NSRect rect = { {0, 0}, {0, 0} };
unsigned start = range.location > maxRows ? maxRows : range.location;
unsigned length = range.length;
if (start + length > maxRows)
length = maxRows - start;
if (start > 0) {
rect.origin.y = cellSize.height * start + insetSize.height;
rect.size.height = cellSize.height * length;
} else {
// Include top inset
rect.origin.y = 0;
rect.size.height = cellSize.height * length + insetSize.height;
}
return rect;
}
- (NSRect)rectForColumnsInRange:(NSRange)range
{
// Compute rect whose horizontal dimensions cover the columns in the given
// range.
// NOTE: The first column must include the left inset. (This method is
// only used to place the scrollbars inside MMVimView.)
NSRect rect = { {0, 0}, {0, 0} };
unsigned start = range.location > maxColumns ? maxColumns : range.location;
unsigned length = range.length;
if (start+length > maxColumns)
length = maxColumns - start;
if (start > 0) {
rect.origin.x = cellSize.width * start + insetSize.width;
rect.size.width = cellSize.width * length;
} else {
// Include left inset
rect.origin.x = 0;
rect.size.width = cellSize.width * length + insetSize.width;
}
return rect;
}
- (void)setFont:(NSFont *)newFont
{
if (newFont && font != newFont) {
[font release];
font = [newFont retain];
ascender = roundf([font ascender]);
float em = [@"m" sizeWithAttributes:
[NSDictionary dictionaryWithObject:newFont
forKey:NSFontAttributeName]].width;
float cellWidthMultiplier = [[NSUserDefaults standardUserDefaults]
floatForKey:MMCellWidthMultiplierKey];
// NOTE! Even though NSFontFixedAdvanceAttribute is a float, it will
// only render at integer sizes. Hence, we restrict the cell width to
// an integer here, otherwise the window width and the actual text
// width will not match.
cellSize.width = ceilf(em * cellWidthMultiplier);
cellSize.height = linespace + defaultLineHeightForFont(newFont);
[self updateAtsuStyles];
}
}
- (void)setWideFont:(NSFont *)newFont
{
if (!newFont) {
if (font) [self setWideFont:font];
} else if (newFont != fontWide) {
[fontWide release];
float pointSize = [newFont pointSize];
NSFontDescriptor *desc = [newFont fontDescriptor];
NSDictionary *dictWide = [NSDictionary
dictionaryWithObject:[NSNumber numberWithFloat:2*cellSize.width]
forKey:NSFontFixedAdvanceAttribute];
desc = [desc fontDescriptorByAddingAttributes:dictWide];
fontWide = [NSFont fontWithDescriptor:desc size:pointSize];
[fontWide retain];
}
}
- (NSFont *)font
{
return font;
}
- (NSFont *)fontWide
{
return fontWide;
}
- (NSSize)cellSize
{
return cellSize;
}
- (void)setLinespace:(float)newLinespace
{
linespace = newLinespace;
// NOTE: The linespace is added to the cell height in order for a multiline
// selection not to have white (background color) gaps between lines. Also
// this simplifies the code a lot because there is no need to check the
// linespace when calculating the size of the text view etc. When the
// linespace is non-zero the baseline will be adjusted as well; check
// MMTypesetter.
cellSize.height = linespace + defaultLineHeightForFont(font);
}
- (void)setShouldDrawInsertionPoint:(BOOL)on
{
}
- (void)deleteSign:(NSString *)signName
{
// ONLY in Core Text!
}
- (void)setToolTipAtMousePoint:(NSString *)string
{
// ONLY in Core Text!
}
- (void)setPreEditRow:(int)row column:(int)col
{
[helper setPreEditRow:row column:col];
}
- (void)setMouseShape:(int)shape
{
[helper setMouseShape:shape];
}
- (void)setAntialias:(BOOL)state
{
antialias = state;
}
- (void)setImControl:(BOOL)enable
{
[helper setImControl:enable];
}
- (void)activateIm:(BOOL)enable
{
[helper activateIm:enable];
}
- (void)checkImState
{
[helper checkImState];
}
- (BOOL)_wantsKeyDownForEvent:(id)event
{
// HACK! This is an undocumented method which is called from within
// -[NSWindow sendEvent] (and perhaps in other places as well) when the
// user presses e.g. Ctrl-Tab or Ctrl-Esc . Returning YES here effectively
// disables the Cocoa "key view loop" (which is undesirable). It may have
// other side-effects, but we really _do_ want to process all key down
// events so it seems safe to always return YES.
return YES;
}
- (void)keyDown:(NSEvent *)event
{
[helper keyDown:event];
}
- (void)insertText:(id)string
{
[helper insertText:string];
}
- (void)doCommandBySelector:(SEL)selector
{
[helper doCommandBySelector:selector];
}
- (BOOL)performKeyEquivalent:(NSEvent *)event
{
return [helper performKeyEquivalent:event];
}
- (BOOL)hasMarkedText
{
return [helper hasMarkedText];
}
- (NSRange)markedRange
{
return [helper markedRange];
}
- (NSDictionary *)markedTextAttributes
{
return [helper markedTextAttributes];
}
- (void)setMarkedTextAttributes:(NSDictionary *)attr
{
[helper setMarkedTextAttributes:attr];
}
- (void)setMarkedText:(id)text selectedRange:(NSRange)range
{
[helper setMarkedText:text selectedRange:range];
}
- (void)unmarkText
{
[helper unmarkText];
}
- (void)scrollWheel:(NSEvent *)event
{
[helper scrollWheel:event];
}
- (void)mouseDown:(NSEvent *)event
{
[helper mouseDown:event];
}
- (void)rightMouseDown:(NSEvent *)event
{
[helper mouseDown:event];
}
- (void)otherMouseDown:(NSEvent *)event
{
[helper mouseDown:event];
}
- (void)mouseUp:(NSEvent *)event
{
[helper mouseUp:event];
}
- (void)rightMouseUp:(NSEvent *)event
{
[helper mouseUp:event];
}
- (void)otherMouseUp:(NSEvent *)event
{
[helper mouseUp:event];
}
- (void)mouseDragged:(NSEvent *)event
{
[helper mouseDragged:event];
}
- (void)rightMouseDragged:(NSEvent *)event
{
[helper mouseDragged:event];
}
- (void)otherMouseDragged:(NSEvent *)event
{
[helper mouseDragged:event];
}
- (void)mouseMoved:(NSEvent *)event
{
[helper mouseMoved:event];
}
- (NSMenu*)menuForEvent:(NSEvent *)event
{
// HACK! Return nil to disable default popup menus (Vim provides its own).
// Called when user Ctrl-clicks in the view (this is already handled in
// rightMouseDown:).
return nil;
}
- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
{
return [helper performDragOperation:sender];
}
- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
{
return [helper draggingEntered:sender];
}
- (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
{
return [helper draggingUpdated:sender];
}
- (BOOL)mouseDownCanMoveWindow
{
return NO;
}
- (BOOL)isOpaque
{
return YES;
}
- (BOOL)acceptsFirstResponder
{
return YES;
}
- (BOOL)isFlipped
{
return NO;
}
- (void)drawRect:(NSRect)rect
{
[defaultBackgroundColor set];
NSRectFill(rect);
NSPoint pt = { insetSize.width, insetSize.height };
[contentImage compositeToPoint:pt operation:NSCompositeCopy];
#ifdef INCLUDE_OLD_IM_CODE
if ([self hasMarkedText] && ![helper useInlineIm]) {
int len = [[helper markedText] length];
int rows = 0;
int cols = maxColumns - [helper preEditColumn];
NSFont *theFont = [[self markedTextAttributes]
valueForKey:NSFontAttributeName];
if (theFont == [self fontWide])
cols = cols / 2;
int done = 0;
int lend = cols > len ? len : cols;
NSAttributedString *aString = [[helper markedText]
attributedSubstringFromRange:NSMakeRange(done, lend)];
NSPoint pt = [self pointForRow:[helper preEditRow]
column:[helper preEditColumn]];
[aString drawAtPoint:pt];
done = lend;
if (done != len) {
int r;
rows = (len - done) / (maxColumns / 2) + 1;
for (r = 1; r <= rows; r++) {
lend = len - done > maxColumns / 2
? maxColumns / 2 : len - done;
aString = [[helper markedText] attributedSubstringFromRange:
NSMakeRange(done, lend)];
NSPoint pt = [self pointForRow:[helper preEditRow]+r
column:0];
[aString drawAtPoint:pt];
done += lend;
}
}
rows = maxRows - 1 - [helper preEditRow];
cols = [helper preEditColumn];
if (theFont == fontWide) {
cols += ([helper imRange].location+[helper imRange].length) * 2;
if (cols >= maxColumns - 1) {
rows -= cols / maxColumns;
cols = cols % 2 ? cols % maxColumns + 1 :
cols % maxColumns;
}
} else {
cols += ([helper imRange].location+[helper imRange].length);
if (cols >= maxColumns) {
rows -= cols / maxColumns;
cols = cols % 2 ? cols % maxColumns + 1 :
cols % maxColumns;
}
}
// TODO: Could IM be in "right-left" mode? If so the insertion point
// will be on the wrong side.
[self drawInsertionPointAtRow:rows
column:cols
shape:MMInsertionPointVertical
fraction:25];
}
#endif // INCLUDE_OLD_IM_CODE
}
- (BOOL) wantsDefaultClipping
{
return NO;
}
#define MM_DEBUG_DRAWING 0
- (void)performBatchDrawWithData:(NSData *)data
{
const void *bytes = [data bytes];
const void *end = bytes + [data length];
if (! NSEqualSizes(imageSize, [self textAreaSize]))
[self resizeContentImage];
#if MM_DEBUG_DRAWING
ASLogDebug(@"====> BEGIN %s", _cmd);
#endif
[self beginDrawing];
// TODO: Sanity check input
while (bytes < end) {
int type = *((int*)bytes); bytes += sizeof(int);
if (ClearAllDrawType == type) {
#if MM_DEBUG_DRAWING
ASLogDebug(@" Clear all");
#endif
[self clearAll];
} else if (ClearBlockDrawType == type) {
unsigned color = *((unsigned*)bytes); bytes += sizeof(unsigned);
int row1 = *((int*)bytes); bytes += sizeof(int);
int col1 = *((int*)bytes); bytes += sizeof(int);
int row2 = *((int*)bytes); bytes += sizeof(int);
int col2 = *((int*)bytes); bytes += sizeof(int);
#if MM_DEBUG_DRAWING
ASLogDebug(@" Clear block (%d,%d) -> (%d,%d)", row1, col1,
row2,col2);
#endif
[self clearBlockFromRow:row1 column:col1
toRow:row2 column:col2
color:[NSColor colorWithArgbInt:color]];
} else if (DeleteLinesDrawType == type) {
unsigned color = *((unsigned*)bytes); bytes += sizeof(unsigned);
int row = *((int*)bytes); bytes += sizeof(int);
int count = *((int*)bytes); bytes += sizeof(int);
int bot = *((int*)bytes); bytes += sizeof(int);
int left = *((int*)bytes); bytes += sizeof(int);
int right = *((int*)bytes); bytes += sizeof(int);
#if MM_DEBUG_DRAWING
ASLogDebug(@" Delete %d line(s) from %d", count, row);
#endif
[self deleteLinesFromRow:row lineCount:count
scrollBottom:bot left:left right:right
color:[NSColor colorWithArgbInt:color]];
} else if (DrawStringDrawType == type) {
int bg = *((int*)bytes); bytes += sizeof(int);
int fg = *((int*)bytes); bytes += sizeof(int);
int sp = *((int*)bytes); bytes += sizeof(int);
int row = *((int*)bytes); bytes += sizeof(int);
int col = *((int*)bytes); bytes += sizeof(int);
int cells = *((int*)bytes); bytes += sizeof(int);
int flags = *((int*)bytes); bytes += sizeof(int);
int len = *((int*)bytes); bytes += sizeof(int);
// UniChar *string = (UniChar*)bytes; bytes += len;
NSString *string = [[NSString alloc]
initWithBytesNoCopy:(void*)bytes
length:len
encoding:NSUTF8StringEncoding
freeWhenDone:NO];
bytes += len;
#if MM_DEBUG_DRAWING
ASLogDebug(@" Draw string at (%d,%d) length=%d flags=%d fg=0x%x "
"bg=0x%x sp=0x%x", row, col, len, flags, fg, bg, sp);
#endif
unichar *characters = malloc(sizeof(unichar) * [string length]);
[string getCharacters:characters];
[self drawString:characters
length:[string length]
atRow:row
column:col
cells:cells withFlags:flags
foregroundColor:[NSColor colorWithRgbInt:fg]
backgroundColor:[NSColor colorWithArgbInt:bg]
specialColor:[NSColor colorWithRgbInt:sp]];
free(characters);
[string release];
} else if (InsertLinesDrawType == type) {
unsigned color = *((unsigned*)bytes); bytes += sizeof(unsigned);
int row = *((int*)bytes); bytes += sizeof(int);
int count = *((int*)bytes); bytes += sizeof(int);
int bot = *((int*)bytes); bytes += sizeof(int);
int left = *((int*)bytes); bytes += sizeof(int);
int right = *((int*)bytes); bytes += sizeof(int);
#if MM_DEBUG_DRAWING
ASLogDebug(@" Insert %d line(s) at row %d", count, row);
#endif
[self insertLinesAtRow:row lineCount:count
scrollBottom:bot left:left right:right
color:[NSColor colorWithArgbInt:color]];
} else if (DrawCursorDrawType == type) {
unsigned color = *((unsigned*)bytes); bytes += sizeof(unsigned);
int row = *((int*)bytes); bytes += sizeof(int);
int col = *((int*)bytes); bytes += sizeof(int);
int shape = *((int*)bytes); bytes += sizeof(int);
int percent = *((int*)bytes); bytes += sizeof(int);
#if MM_DEBUG_DRAWING
ASLogDebug(@" Draw cursor at (%d,%d)", row, col);
#endif
[helper setInsertionPointColor:[NSColor colorWithRgbInt:color]];
[self drawInsertionPointAtRow:row column:col shape:shape
fraction:percent];
} else if (DrawInvertedRectDrawType == type) {
int row = *((int*)bytes); bytes += sizeof(int);
int col = *((int*)bytes); bytes += sizeof(int);
int nr = *((int*)bytes); bytes += sizeof(int);
int nc = *((int*)bytes); bytes += sizeof(int);
/*int invert = *((int*)bytes);*/ bytes += sizeof(int);
#if MM_DEBUG_DRAWING
ASLogDebug(@" Draw inverted rect: row=%d col=%d nrows=%d "
"ncols=%d", row, col, nr, nc);
#endif
[self drawInvertedRectAtRow:row column:col numRows:nr
numColumns:nc];
} else if (SetCursorPosDrawType == type) {
// TODO: This is used for Voice Over support in MMTextView,
// MMAtsuiTextView currently does not support Voice Over.
/*cursorRow = *((int*)bytes);*/ bytes += sizeof(int);
/*cursorCol = *((int*)bytes);*/ bytes += sizeof(int);
} else {
ASLogWarn(@"Unknown draw type (type=%d)", type);
}
}
[self endDrawing];
[self setNeedsDisplay:YES];
// NOTE: During resizing, Cocoa only sends draw messages before Vim's rows
// and columns are changed (due to ipc delays). Force a redraw here.
if ([self inLiveResize])
[self display];
#if MM_DEBUG_DRAWING
ASLogDebug(@"<==== END %s", _cmd);
#endif
}
- (NSSize)constrainRows:(int *)rows columns:(int *)cols toSize:(NSSize)size
{
// TODO:
// - Rounding errors may cause size change when there should be none
// - Desired rows/columns shold not be 'too small'
// Constrain the desired size to the given size. Values for the minimum
// rows and columns are taken from Vim.
NSSize desiredSize = [self desiredSize];
int desiredRows = maxRows;
int desiredCols = maxColumns;
if (size.height != desiredSize.height) {
float fh = cellSize.height;
float ih = 2 * insetSize.height;
if (fh < 1.0f) fh = 1.0f;
desiredRows = floor((size.height - ih)/fh);
desiredSize.height = fh*desiredRows + ih;
}
if (size.width != desiredSize.width) {
float fw = cellSize.width;
float iw = 2 * insetSize.width;
if (fw < 1.0f) fw = 1.0f;
desiredCols = floor((size.width - iw)/fw);
desiredSize.width = fw*desiredCols + iw;
}
if (rows) *rows = desiredRows;
if (cols) *cols = desiredCols;
return desiredSize;
}
- (NSSize)desiredSize
{
// Compute the size the text view should be for the entire text area and
// inset area to be visible with the present number of rows and columns.
return NSMakeSize(maxColumns * cellSize.width + 2 * insetSize.width,
maxRows * cellSize.height + 2 * insetSize.height);
}
- (NSSize)minSize
{
// Compute the smallest size the text view is allowed to be.
return NSMakeSize(MMMinColumns * cellSize.width + 2 * insetSize.width,
MMMinRows * cellSize.height + 2 * insetSize.height);
}
- (void)changeFont:(id)sender
{
[helper changeFont:sender];
}
//
// NOTE: The menu items cut/copy/paste/undo/redo/select all/... must be bound
// to the same actions as in IB otherwise they will not work with dialogs. All
// we do here is forward these actions to the Vim process.
//
- (IBAction)cut:(id)sender
{
[[self windowController] vimMenuItemAction:sender];
}
- (IBAction)copy:(id)sender
{
[[self windowController] vimMenuItemAction:sender];
}
- (IBAction)paste:(id)sender
{
[[self windowController] vimMenuItemAction:sender];
}
- (IBAction)undo:(id)sender
{
[[self windowController] vimMenuItemAction:sender];
}
- (IBAction)redo:(id)sender
{
[[self windowController] vimMenuItemAction:sender];
}
- (IBAction)selectAll:(id)sender
{
[[self windowController] vimMenuItemAction:sender];
}
- (BOOL)convertPoint:(NSPoint)point toRow:(int *)row column:(int *)column
{
// View is not flipped, instead the atsui code draws to a flipped image;
// thus we need to 'flip' the coordinate here since the column number
// increases in an up-to-down order.
point.y = [self frame].size.height - point.y;
NSPoint origin = { insetSize.width, insetSize.height };
if (!(cellSize.width > 0 && cellSize.height > 0))
return NO;
if (row) *row = floor((point.y-origin.y-1) / cellSize.height);
if (column) *column = floor((point.x-origin.x-1) / cellSize.width);
return YES;
}
- (NSPoint)pointForRow:(int)row column:(int)col
{
// Return the lower left coordinate of the cell at (row,column).
NSPoint pt;
pt.x = insetSize.width + col*cellSize.width;
pt.y = [self frame].size.height -
(insetSize.height + (1+row)*cellSize.height);
return pt;
}
- (NSRect)rectForRow:(int)row column:(int)col numRows:(int)nr
numColumns:(int)nc
{
// Return the rect for the block which covers the specified rows and
// columns. The lower-left corner is the origin of this rect.
NSRect rect;
rect.origin.x = insetSize.width + col*cellSize.width;
rect.origin.y = [self frame].size.height -
(insetSize.height + (nr+row)*cellSize.height);
rect.size.width = nc*cellSize.width;
rect.size.height = nr*cellSize.height;
return rect;
}
- (NSArray *)validAttributesForMarkedText
{
return nil;
}
- (NSAttributedString *)attributedSubstringFromRange:(NSRange)range
{
return nil;
}
- (NSUInteger)characterIndexForPoint:(NSPoint)point
{
return NSNotFound;
}
// The return type of this message changed with OS X 10.5 so we need this
// kludge in order to avoid compiler warnings on OS X 10.4.
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
- (NSInteger)conversationIdentifier
{
return (NSInteger)self;
}
#else
- (long)conversationIdentifier
{
return (long)self;
}
#endif
- (NSRange)selectedRange
{
return [helper imRange];
}
- (NSRect)firstRectForCharacterRange:(NSRange)range
{
return [helper firstRectForCharacterRange:range];
}
@end // MMAtsuiTextView
@implementation MMAtsuiTextView (Private)
- (void)initAtsuStyles
{
int i;
for (i = 0; i < MMMaxCellsPerChar; i++)
ATSUCreateStyle(&atsuStyles[i]);
}
- (void)disposeAtsuStyles
{
int i;
for (i = 0; i < MMMaxCellsPerChar; i++)
if (atsuStyles[i] != NULL)
{
if (ATSUDisposeStyle(atsuStyles[i]) != noErr)
atsuStyles[i] = NULL;
}
}
- (void)updateAtsuStyles
{
ATSUFontID fontID;
Fixed fontSize;
Fixed fontWidth;
int i;
CGAffineTransform transform = CGAffineTransformMakeScale(1, -1);
ATSStyleRenderingOptions options;
fontID = [font _atsFontID];
fontSize = Long2Fix([font pointSize]);
options = kATSStyleApplyAntiAliasing;
ATSUAttributeTag attribTags[] =
{
kATSUFontTag, kATSUSizeTag, kATSUImposeWidthTag,
kATSUFontMatrixTag, kATSUStyleRenderingOptionsTag,
kATSUMaxATSUITagValue + 1
};
ByteCount attribSizes[] =
{
sizeof(ATSUFontID), sizeof(Fixed), sizeof(fontWidth),
sizeof(CGAffineTransform), sizeof(ATSStyleRenderingOptions),
sizeof(font)
};
ATSUAttributeValuePtr attribValues[] =
{
&fontID, &fontSize, &fontWidth, &transform, &options, &font
};
ATSUFontFeatureType featureTypes[] = {
kLigaturesType, kLigaturesType