widget/cocoa/ComplexTextInputPanel.mm

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/widget/cocoa/ComplexTextInputPanel.mm	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,194 @@
     1.4 +/*
     1.5 + * Copyright (C) 2009 Apple Inc. All Rights Reserved.
     1.6 + *
     1.7 + * Redistribution and use in source and binary forms, with or without
     1.8 + * modification, are permitted provided that the following conditions
     1.9 + * are met:
    1.10 + * 1. Redistributions of source code must retain the above copyright
    1.11 + *    notice, this list of conditions and the following disclaimer.
    1.12 + * 2. Redistributions in binary form must reproduce the above copyright
    1.13 + *    notice, this list of conditions and the following disclaimer in the
    1.14 + *    documentation and/or other materials provided with the distribution.
    1.15 + *
    1.16 + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
    1.17 + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    1.18 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    1.19 + * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
    1.20 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    1.21 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    1.22 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    1.23 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
    1.24 + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    1.25 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    1.26 + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
    1.27 + *
    1.28 + * Modified by Josh Aas of Mozilla Corporation.
    1.29 + */
    1.30 +
    1.31 +#import "ComplexTextInputPanel.h"
    1.32 +
    1.33 +#include <algorithm>
    1.34 +#include "mozilla/Preferences.h"
    1.35 +#include "nsChildView.h"
    1.36 +#include "nsCocoaFeatures.h"
    1.37 +
    1.38 +using namespace mozilla;
    1.39 +
    1.40 +#define kInputWindowHeight 20
    1.41 +
    1.42 +@implementation ComplexTextInputPanel
    1.43 +
    1.44 ++ (ComplexTextInputPanel*)sharedComplexTextInputPanel
    1.45 +{
    1.46 +  static ComplexTextInputPanel *sComplexTextInputPanel;
    1.47 +  if (!sComplexTextInputPanel)
    1.48 +    sComplexTextInputPanel = [[ComplexTextInputPanel alloc] init];
    1.49 +  return sComplexTextInputPanel;
    1.50 +}
    1.51 +
    1.52 +- (id)init
    1.53 +{
    1.54 +  // In the original Apple code the style mask is given by a function which is not open source.
    1.55 +  // What could possibly be worth hiding in that function, I do not know.
    1.56 +  // Courtesy of gdb: stylemask: 011000011111, 0x61f
    1.57 +  self = [super initWithContentRect:NSZeroRect styleMask:0x61f backing:NSBackingStoreBuffered defer:YES];
    1.58 +  if (!self)
    1.59 +    return nil;
    1.60 +
    1.61 +  // Set the frame size.
    1.62 +  NSRect visibleFrame = [[NSScreen mainScreen] visibleFrame];
    1.63 +  NSRect frame = NSMakeRect(visibleFrame.origin.x, visibleFrame.origin.y, visibleFrame.size.width, kInputWindowHeight);
    1.64 +
    1.65 +  [self setFrame:frame display:NO];
    1.66 +
    1.67 +  mInputTextView = [[NSTextView alloc] initWithFrame:[self.contentView frame]];        
    1.68 +  mInputTextView.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable | NSViewMaxXMargin | NSViewMinXMargin | NSViewMaxYMargin | NSViewMinYMargin;
    1.69 +
    1.70 +  NSScrollView* scrollView = [[NSScrollView alloc] initWithFrame:[self.contentView frame]];
    1.71 +  scrollView.documentView = mInputTextView;
    1.72 +  self.contentView = scrollView;
    1.73 +  [scrollView release];
    1.74 +
    1.75 +  [self setFloatingPanel:YES];
    1.76 +
    1.77 +  [[NSNotificationCenter defaultCenter] addObserver:self
    1.78 +                                           selector:@selector(keyboardInputSourceChanged:)
    1.79 +                                               name:NSTextInputContextKeyboardSelectionDidChangeNotification
    1.80 +                                             object:nil];
    1.81 +
    1.82 +  return self;
    1.83 +}
    1.84 +
    1.85 +- (void)dealloc
    1.86 +{
    1.87 +  [[NSNotificationCenter defaultCenter] removeObserver:self];
    1.88 +  
    1.89 +  [mInputTextView release];
    1.90 +  
    1.91 +  [super dealloc];
    1.92 +}
    1.93 +
    1.94 +- (void)keyboardInputSourceChanged:(NSNotification *)notification
    1.95 +{
    1.96 +  static int8_t sDoCancel = -1;
    1.97 +  if (!sDoCancel || ![self inComposition]) {
    1.98 +    return;
    1.99 +  }
   1.100 +  if (sDoCancel < 0) {
   1.101 +    bool cancelComposition = false;
   1.102 +    static const char* kPrefName =
   1.103 +      "ui.plugin.cancel_composition_at_input_source_changed";
   1.104 +    nsresult rv = Preferences::GetBool(kPrefName, &cancelComposition);
   1.105 +    NS_ENSURE_SUCCESS(rv, );
   1.106 +    sDoCancel = cancelComposition ? 1 : 0;
   1.107 +  }
   1.108 +  if (sDoCancel) {
   1.109 +    [self cancelComposition];
   1.110 +  }
   1.111 +}
   1.112 +
   1.113 +- (BOOL)interpretKeyEvent:(NSEvent*)event string:(NSString**)string
   1.114 +{
   1.115 +  BOOL hadMarkedText = [mInputTextView hasMarkedText];
   1.116 +
   1.117 +  *string = nil;
   1.118 +
   1.119 +  if (![[mInputTextView inputContext] handleEvent:event])
   1.120 +    return NO;
   1.121 +
   1.122 +  if ([mInputTextView hasMarkedText]) {
   1.123 +    // Don't show the input method window for dead keys
   1.124 +    if ([[event characters] length] > 0)
   1.125 +      [self orderFront:nil];
   1.126 +
   1.127 +    return YES;
   1.128 +  } else {
   1.129 +    [self orderOut:nil];
   1.130 +
   1.131 +    NSString *text = [[mInputTextView textStorage] string];
   1.132 +    if ([text length] > 0)
   1.133 +      *string = [[text copy] autorelease];
   1.134 +  }
   1.135 +
   1.136 +  [mInputTextView setString:@""];
   1.137 +  return hadMarkedText;
   1.138 +}
   1.139 +
   1.140 +- (NSTextInputContext*)inputContext
   1.141 +{
   1.142 +  return [mInputTextView inputContext];
   1.143 +}
   1.144 +
   1.145 +- (void)cancelComposition
   1.146 +{
   1.147 +  [mInputTextView setString:@""];
   1.148 +  [self orderOut:nil];
   1.149 +}
   1.150 +
   1.151 +- (BOOL)inComposition
   1.152 +{
   1.153 +  return [mInputTextView hasMarkedText];
   1.154 +}
   1.155 +
   1.156 +- (void)adjustTo:(NSView*)view
   1.157 +{
   1.158 +  NSRect viewRect = [view frame];
   1.159 +  viewRect.origin.x = 0;
   1.160 +  viewRect.origin.y = 0;
   1.161 +  viewRect = [view convertRect:viewRect toView:nil];
   1.162 +  if (nsCocoaFeatures::OnLionOrLater()) {
   1.163 +    viewRect = [[view window] convertRectToScreen:viewRect];
   1.164 +  } else {
   1.165 +    viewRect.origin = [[view window] convertBaseToScreen:viewRect.origin];
   1.166 +  }
   1.167 +  NSRect selfRect = [self frame];
   1.168 +  CGFloat minWidth = static_cast<CGFloat>(
   1.169 +                       Preferences::GetUint("ui.plugin.panel.min-width", 500));
   1.170 +  NSRect rect = NSMakeRect(viewRect.origin.x,
   1.171 +                           viewRect.origin.y - selfRect.size.height,
   1.172 +                           std::max(viewRect.size.width, minWidth),
   1.173 +                           selfRect.size.height);
   1.174 +
   1.175 +  // Adjust to screen.
   1.176 +  NSRect screenRect = [[NSScreen mainScreen] visibleFrame];
   1.177 +  if (rect.origin.x < screenRect.origin.x) {
   1.178 +    rect.origin.x = screenRect.origin.x;
   1.179 +  }
   1.180 +  if (rect.origin.y < screenRect.origin.y) {
   1.181 +    rect.origin.y = screenRect.origin.y;
   1.182 +  }
   1.183 +  CGFloat xMostOfScreen = screenRect.origin.x + screenRect.size.width;
   1.184 +  CGFloat yMostOfScreen = screenRect.origin.y + screenRect.size.height;
   1.185 +  CGFloat xMost = rect.origin.x + rect.size.width;
   1.186 +  CGFloat yMost = rect.origin.y + rect.size.height;
   1.187 +  if (xMostOfScreen < xMost) {
   1.188 +    rect.origin.x -= xMost - xMostOfScreen;
   1.189 +  }
   1.190 +  if (yMostOfScreen < yMost) {
   1.191 +    rect.origin.y -= yMost - yMostOfScreen;
   1.192 +  }
   1.193 +
   1.194 +  [self setFrame:rect display:[self isVisible]];
   1.195 +}
   1.196 +
   1.197 +@end

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