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    GacUI添加了一个新的Demo。这个Demo用了几个按钮(之所以不用菜单是因为不想让Demo一下子包含太多新东西)来实现剪贴板操作、只读控制和行跳转等功能。在剪贴板里面的内容是文字的时候,Paste按钮会被Enable。这个过程是自动的,也就是说,你在画图里面复制了一个图片,这个按钮也会变灰。Cut和Copy按钮仅在文本框有文字被选中的时候可用,因此相应了文本框的SelectionChanged来处理这件事情。如果文本框的内容太多的话,{VS, Explorer} X {Debug, Release}这四种运行方法里面,只有在Debug模式下挂了VS这种情况会感觉有点卡,其他的打开方法都是很流畅的。先来看图:



    代码还是比较简单的。先用一个Table分成三行,前两行让行高缩短到最短,最后一行则利用了剩余空间的100%撑开。前两行里面的按钮用Stack来对它们进行排版。单行文本框没有最小高度,所以依靠Stack和Table,它的高度会保持跟按钮一致。代码如下:

  1 #include "..\..\Public\Source\GacUIIncludes.h"
  2 #include <Windows.h>
  3 
  4 int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int CmdShow)
  5 {
  6     return SetupWindowsDirect2DRenderer();
  7 }
  8 
  9 class TextBoxEditorWindow : public GuiWindow
 10 {
 11 private:
 12     GuiButton*                        buttonCut;
 13     GuiButton*                        buttonCopy;
 14     GuiButton*                        buttonPaste;
 15     GuiButton*                        buttonSelectAll;
 16     GuiSelectableButton*            checkReadonly;
 17     GuiSinglelineTextBox*            textGoto;
 18     GuiButton*                        buttonGoto;
 19     GuiMultilineTextBox*            textDocument;
 20 
 21     void UpdateEditButtonState()
 22     {
 23         buttonCut->SetEnabled(textDocument->CanCut());
 24         buttonCopy->SetEnabled(textDocument->CanCopy());
 25         buttonPaste->SetEnabled(textDocument->CanPaste());
 26     }
 27 
 28     // ensure that the buttonGoto is enabled only when textGoto's content is a positive number
 29     void UpdateGotoButtonState()
 30     {
 31         buttonGoto->SetEnabled(utow(wtou(textGoto->GetText()))==textGoto->GetText() && wtou(textGoto->GetText())!=0);
 32     }
 33 
 34     // cut text box selection
 35     void buttonCut_OnClicked(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 36     {
 37         textDocument->Cut();
 38         textDocument->SetFocus();
 39     }
 40 
 41     // copy text box selection
 42     void buttonCopy_OnClicked(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 43     {
 44         textDocument->Copy();
 45         textDocument->SetFocus();
 46     }
 47 
 48     // paste text from clipboard
 49     void buttonPaste_OnClicked(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 50     {
 51         textDocument->Paste();
 52         textDocument->SetFocus();
 53     }
 54 
 55     // select all text
 56     void buttonSelectAll_OnClicked(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 57     {
 58         textDocument->SelectAll();
 59         textDocument->SetFocus();
 60     }
 61 
 62     // go to the specified line
 63     void buttonGoto_OnClicked(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 64     {
 65         int line=wtoi(textGoto->GetText())-1;
 66         textDocument->Select(TextPos(line, 0), TextPos(line, 0));
 67         textDocument->SetFocus();
 68     }
 69 
 70     // make the textbox readonly or not readonly
 71     void checkReadonly_OnSelectedChanged(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 72     {
 73         textDocument->SetReadonly(checkReadonly->GetSelected());
 74         UpdateEditButtonState();
 75     }
 76 
 77     // when textGoto changed, disable buttonGoto if the text in the textGoto is failed to pass the validation
 78     void textGoto_TextChanged(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 79     {
 80         UpdateGotoButtonState();
 81     }
 82 
 83     // update the edit buttons when selection changed
 84     void textDocument_SelectionChanged(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 85     {
 86         UpdateEditButtonState();
 87     }
 88     
 89     // update the edit buttons when clipboard changed changed
 90     void window_OnClipboardUpdated(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
 91     {
 92         UpdateEditButtonState();
 93     }
 94 public:
 95     TextBoxEditorWindow()
 96         :GuiWindow(GetCurrentTheme()->CreateWindowStyle())
 97     {
 98         this->SetText(L"Controls.TextBox.Editor");
 99         this->GetContainerComposition()->SetMinSizeLimitation(GuiGraphicsComposition::LimitToElementAndChildren);
100         this->ClipboardUpdated.AttachMethod(this&TextBoxEditorWindow::window_OnClipboardUpdated);
101 
102         GuiTableComposition* table=new GuiTableComposition;
103         table->SetAlignmentToParent(Margin(0000));
104         table->SetCellPadding(2);
105         table->SetRowsAndColumns(31);
106         table->SetRowOption(0, GuiCellOption::MinSizeOption());
107         table->SetRowOption(1, GuiCellOption::MinSizeOption());
108         table->SetRowOption(2, GuiCellOption::PercentageOption(1.0));
109         table->SetColumnOption(0, GuiCellOption::PercentageOption(1.0));
110         this->GetContainerComposition()->AddChild(table);
111         
112         {
113             GuiCellComposition* cell=new GuiCellComposition;
114             table->AddChild(cell);
115             cell->SetSite(0011);
116 
117             GuiStackComposition* stack=new GuiStackComposition;
118             stack->SetMinSizeLimitation(GuiGraphicsComposition::LimitToElementAndChildren);
119             stack->SetPadding(2);
120             stack->SetAlignmentToParent(Margin(0000));
121             cell->AddChild(stack);
122 
123             {
124                 GuiStackItemComposition* item=new GuiStackItemComposition;
125                 stack->AddChild(item);
126 
127                 buttonCut=g::NewButton();
128                 buttonCut->SetText(L"Cut");
129                 buttonCut->GetBoundsComposition()->SetAlignmentToParent(Margin(0000));
130                 buttonCut->Clicked.AttachMethod(this&TextBoxEditorWindow::buttonCut_OnClicked);
131                 item->AddChild(buttonCut->GetBoundsComposition());
132             }
133             {
134                 GuiStackItemComposition* item=new GuiStackItemComposition;
135                 stack->AddChild(item);
136 
137                 buttonCopy=g::NewButton();
138                 buttonCopy->SetText(L"Copy");
139                 buttonCopy->GetBoundsComposition()->SetAlignmentToParent(Margin(0000));
140                 buttonCopy->Clicked.AttachMethod(this&TextBoxEditorWindow::buttonCopy_OnClicked);
141                 item->AddChild(buttonCopy->GetBoundsComposition());
142             }
143             {
144                 GuiStackItemComposition* item=new GuiStackItemComposition;
145                 stack->AddChild(item);
146 
147                 buttonPaste=g::NewButton();
148                 buttonPaste->SetText(L"Paste");
149                 buttonPaste->GetBoundsComposition()->SetAlignmentToParent(Margin(0000));
150                 buttonPaste->Clicked.AttachMethod(this&TextBoxEditorWindow::buttonPaste_OnClicked);
151                 item->AddChild(buttonPaste->GetBoundsComposition());
152             }
153             {
154                 GuiStackItemComposition* item=new GuiStackItemComposition;
155                 stack->AddChild(item);
156 
157                 buttonSelectAll=g::NewButton();
158                 buttonSelectAll->SetText(L"Select All");
159                 buttonSelectAll->GetBoundsComposition()->SetAlignmentToParent(Margin(0000));
160                 buttonSelectAll->Clicked.AttachMethod(this&TextBoxEditorWindow::buttonSelectAll_OnClicked);
161                 item->AddChild(buttonSelectAll->GetBoundsComposition());
162             }
163             {
164                 GuiStackItemComposition* item=new GuiStackItemComposition;
165                 stack->AddChild(item);
166 
167                 checkReadonly=g::NewCheckBox();
168                 checkReadonly->SetText(L"Readonly");
169                 checkReadonly->GetBoundsComposition()->SetAlignmentToParent(Margin(0000));
170                 checkReadonly->SelectedChanged.AttachMethod(this&TextBoxEditorWindow::checkReadonly_OnSelectedChanged);
171                 item->AddChild(checkReadonly->GetBoundsComposition());
172             }
173         }
174         {
175             GuiCellComposition* cell=new GuiCellComposition;
176             table->AddChild(cell);
177             cell->SetSite(1011);
178 
179             GuiStackComposition* stack=new GuiStackComposition;
180             stack->SetMinSizeLimitation(GuiGraphicsComposition::LimitToElementAndChildren);
181             stack->SetPadding(2);
182             stack->SetAlignmentToParent(Margin(0000));
183             cell->AddChild(stack);
184 
185             {
186                 GuiStackItemComposition* item=new GuiStackItemComposition;
187                 stack->AddChild(item);
188 
189                 textGoto=g::NewTextBox();
190                 textGoto->GetBoundsComposition()->SetBounds(Rect(Point(00), Size(1800)));
191                 textGoto->GetBoundsComposition()->SetAlignmentToParent(Margin(0000));
192                 textGoto->TextChanged.AttachMethod(this&TextBoxEditorWindow::textGoto_TextChanged);
193                 item->AddChild(textGoto->GetBoundsComposition());
194             }
195             {
196                 GuiStackItemComposition* item=new GuiStackItemComposition;
197                 stack->AddChild(item);
198 
199                 buttonGoto=g::NewButton();
200                 buttonGoto->SetText(L"Go to this line");
201                 buttonGoto->GetBoundsComposition()->SetAlignmentToParent(Margin(0000));
202                 buttonGoto->Clicked.AttachMethod(this&TextBoxEditorWindow::buttonGoto_OnClicked);
203                 item->AddChild(buttonGoto->GetBoundsComposition());
204             }
205         }
206         {
207             GuiCellComposition* cell=new GuiCellComposition;
208             table->AddChild(cell);
209             cell->SetSite(2011);
210 
211             textDocument=g::NewMultilineTextBox();
212             textDocument->GetBoundsComposition()->SetAlignmentToParent(Margin(0000));
213             textDocument->SelectionChanged.AttachMethod(this&TextBoxEditorWindow::textDocument_SelectionChanged);
214             cell->AddChild(textDocument->GetBoundsComposition());
215         }
216 
217         // make some buttons enabled or disabled appropiately
218         UpdateEditButtonState();
219         UpdateGotoButtonState();
220         // set the preferred minimum client size
221         this->GetBoundsComposition()->SetPreferredMinSize(Size(640480));
222         // call this to calculate the size immediately if any indirect content in the table changes
223         // so that the window can calcaulte its correct size before calling the MoveToScreenCenter()
224         this->ForceCalculateSizeImmediately();
225         // move to the screen center
226         this->MoveToScreenCenter();
227     }
228 
229     ~TextBoxEditorWindow()
230     {
231     }
232 };
233 
234 void GuiMain()
235 {
236     GuiWindow* window=new TextBoxEditorWindow();
237     GetApplication()->Run(window);
238     delete window;
239 }

    GacUI将提供两个文本框的Demo,这是第一个。GacUI的文本框从一开始就具备了让每一个字符的颜色可以不同的功能,下一个Demo将展示如何利用使用正则表达式构建的词法分析器(见这里这里),让文本框在编辑的时候,跟所有的代码编辑器一样,可以根据情况把不同的字符串染成不同的颜色。
posted on 2012-05-05 02:37 陈梓瀚(vczh) 阅读(5053) 评论(5)  编辑 收藏 引用 所属分类: GacUI

评论:
# re: GacUI Demo:文本框基本应用 2012-05-05 08:24 | 空明流转
基本成型了。。。  回复  更多评论
  
# re: GacUI Demo:文本框基本应用[未登录] 2012-05-06 02:10 | me
你太厉害了!别太累哦!  回复  更多评论
  
# re: GacUI Demo:文本框基本应用 2012-05-06 05:28 | Zblc(邱震钰)
不容易瓦  回复  更多评论
  
# re: GacUI Demo:文本框基本应用 2012-05-07 00:14 | vczh
公司发winphone7.5手机了灭哈哈。  回复  更多评论
  
# re: GacUI Demo:文本框基本应用[未登录] 2012-05-07 16:37 | me
哇哇哇!!!  回复  更多评论
  

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