1 /* 2 * Copyright 2001-2015, Haiku Inc. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Frans van Nispen (xlr8@tref.nl) 7 * Marc Flerackers (mflerackers@androme.be) 8 */ 9 10 11 #include "TextInput.h" 12 13 #include <stdio.h> 14 #include <stdlib.h> 15 #include <string.h> 16 17 #include <ControlLook.h> 18 #include <InterfaceDefs.h> 19 #include <LayoutUtils.h> 20 #include <Message.h> 21 #include <String.h> 22 #include <TextControl.h> 23 #include <TextView.h> 24 #include <Window.h> 25 26 27 namespace BPrivate { 28 29 30 _BTextInput_::_BTextInput_(BRect frame, BRect textRect, uint32 resizeMask, 31 uint32 flags) 32 : 33 BTextView(frame, "_input_", textRect, resizeMask, flags), 34 fPreviousText(NULL) 35 { 36 MakeResizable(true); 37 } 38 39 40 _BTextInput_::_BTextInput_(BMessage* archive) 41 : 42 BTextView(archive), 43 fPreviousText(NULL) 44 { 45 MakeResizable(true); 46 } 47 48 49 _BTextInput_::~_BTextInput_() 50 { 51 free(fPreviousText); 52 } 53 54 55 BArchivable* 56 _BTextInput_::Instantiate(BMessage* archive) 57 { 58 if (validate_instantiation(archive, "_BTextInput_")) 59 return new _BTextInput_(archive); 60 61 return NULL; 62 } 63 64 65 status_t 66 _BTextInput_::Archive(BMessage* data, bool deep) const 67 { 68 return BTextView::Archive(data, true); 69 } 70 71 72 void 73 _BTextInput_::MouseDown(BPoint where) 74 { 75 if (!IsFocus()) { 76 MakeFocus(true); 77 return; 78 } 79 80 // only pass through to base class if we already have focus 81 BTextView::MouseDown(where); 82 } 83 84 85 void 86 _BTextInput_::FrameResized(float width, float height) 87 { 88 BTextView::FrameResized(width, height); 89 90 AlignTextRect(); 91 } 92 93 94 void 95 _BTextInput_::KeyDown(const char* bytes, int32 numBytes) 96 { 97 switch (*bytes) { 98 case B_ENTER: 99 { 100 if (!TextControl()->IsEnabled()) 101 break; 102 103 if (fPreviousText == NULL || strcmp(Text(), fPreviousText) != 0) { 104 TextControl()->Invoke(); 105 free(fPreviousText); 106 fPreviousText = strdup(Text()); 107 } 108 109 SelectAll(); 110 break; 111 } 112 113 case B_TAB: 114 BView::KeyDown(bytes, numBytes); 115 break; 116 117 default: 118 BTextView::KeyDown(bytes, numBytes); 119 AlignTextRect(); 120 break; 121 } 122 } 123 124 125 void 126 _BTextInput_::MakeFocus(bool state) 127 { 128 if (state == IsFocus()) 129 return; 130 131 BTextView::MakeFocus(state); 132 133 if (state) { 134 SetInitialText(); 135 SelectAll(); 136 } else { 137 if (strcmp(Text(), fPreviousText) != 0) 138 TextControl()->Invoke(); 139 140 free(fPreviousText); 141 fPreviousText = NULL; 142 } 143 144 if (Window() != NULL) { 145 // Invalidate parent to draw or remove the focus mark 146 if (BTextControl* parent = dynamic_cast<BTextControl*>(Parent())) { 147 BRect frame = Frame(); 148 frame.InsetBy(-1.0, -1.0); 149 parent->Invalidate(frame); 150 } 151 } 152 } 153 154 155 BSize 156 _BTextInput_::MinSize() 157 { 158 BSize min; 159 min.height = ceilf(LineHeight(0) + 2.0); 160 // we always add at least one pixel vertical inset top/bottom for 161 // the text rect. 162 min.width = min.height * 3; 163 return BLayoutUtils::ComposeSize(ExplicitMinSize(), min); 164 } 165 166 167 void 168 _BTextInput_::AlignTextRect() 169 { 170 // the label font could require the control to be higher than 171 // necessary for the text view, we compensate this by layouting 172 // the text rect to be in the middle, normally this means there 173 // is one pixel spacing on each side 174 BRect textRect(Bounds()); 175 float vInset = max_c(1, 176 floorf((textRect.Height() - LineHeight(0)) / 2.0)); 177 float hInset = 2; 178 float textFontWidth = TextRect().Width(); 179 180 switch (Alignment()) { 181 case B_ALIGN_LEFT: 182 hInset = be_control_look->DefaultLabelSpacing(); 183 break; 184 185 case B_ALIGN_RIGHT: 186 hInset = textRect.Width() - textFontWidth; 187 hInset -= be_control_look->DefaultLabelSpacing(); 188 break; 189 190 case B_ALIGN_CENTER: 191 hInset = (textRect.Width() - textFontWidth) / 2.0; 192 break; 193 194 default: 195 break; 196 } 197 198 textRect.InsetBy(hInset, vInset); 199 SetTextRect(textRect); 200 } 201 202 203 void 204 _BTextInput_::SetInitialText() 205 { 206 free(fPreviousText); 207 fPreviousText = NULL; 208 209 if (Text() != NULL) 210 fPreviousText = strdup(Text()); 211 } 212 213 214 void 215 _BTextInput_::Paste(BClipboard* clipboard) 216 { 217 BTextView::Paste(clipboard); 218 Invalidate(); 219 } 220 221 222 void 223 _BTextInput_::InsertText(const char* inText, int32 inLength, 224 int32 inOffset, const text_run_array* inRuns) 225 { 226 // Filter all line breaks, note that inText is not terminated. 227 if (inLength == 1) { 228 if (*inText == '\n' || *inText == '\r') 229 BTextView::InsertText(" ", 1, inOffset, inRuns); 230 else 231 BTextView::InsertText(inText, 1, inOffset, inRuns); 232 } else { 233 BString filteredText(inText, inLength); 234 filteredText.ReplaceAll('\n', ' '); 235 filteredText.ReplaceAll('\r', ' '); 236 BTextView::InsertText(filteredText.String(), inLength, inOffset, 237 inRuns); 238 } 239 240 TextControl()->InvokeNotify(TextControl()->ModificationMessage(), 241 B_CONTROL_MODIFIED); 242 } 243 244 245 void 246 _BTextInput_::DeleteText(int32 fromOffset, int32 toOffset) 247 { 248 BTextView::DeleteText(fromOffset, toOffset); 249 250 TextControl()->InvokeNotify(TextControl()->ModificationMessage(), 251 B_CONTROL_MODIFIED); 252 } 253 254 255 BTextControl* 256 _BTextInput_::TextControl() 257 { 258 BTextControl* textControl = NULL; 259 if (Parent() != NULL) 260 textControl = dynamic_cast<BTextControl*>(Parent()); 261 262 if (textControl == NULL) 263 debugger("_BTextInput_ should have a BTextControl as parent"); 264 265 return textControl; 266 } 267 268 269 } // namespace BPrivate 270 271