Usermode/Applications/axwin3_src/WM/renderers/widget/textinput.c

   1 /*
   2  * Acess2 Window Manager v3
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * renderer/widget/textinput.c
   6  * - Single line text box
   7  *
   8  * TODO: Support Right-to-Left text
   9  */
  10 #include <common.h>
  11 #include "./common.h"
  12 #include "./colours.h"
  13
  14 struct sTextInputInfo
  15 {
  16          int    DrawOfs;        // Byte offset for the leftmost character
  17          int    CursorXOfs;     // Pixel offset of the cursor
  18 };
  19
  20 void Widget_TextInput_Render(tWindow *Window, tElement *Element)
  21 {
  22         struct sTextInputInfo   *info = (void*)Element->Data;
  23         struct sWidgetWin       *wininfo = Window->RendererInfo;
  24
  25         WM_Render_FillRect(Window,
  26                 Element->CachedX, Element->CachedY,
  27                 Element->CachedW, Element->CachedH,
  28                 TEXTINPUT_BACKGROUND
  29                 );
  30         WM_Render_DrawRect(Window,
  31                 Element->CachedX, Element->CachedY,
  32                 Element->CachedW, Element->CachedH,
  33                 TEXTINPUT_BORDER_OUT
  34                 );
  35         WM_Render_DrawRect(Window,
  36                 Element->CachedX+1, Element->CachedY+1,
  37                 Element->CachedW-2, Element->CachedH-2,
  38                 TEXTINPUT_BORDER_IN
  39                 );
  40
  41         // Text
  42         WM_Render_DrawText(Window,
  43                 Element->CachedX+2, Element->CachedY+2,
  44                 Element->CachedW-4, Element->CachedW-4,
  45                 NULL, TEXTINPUT_TEXT,
  46                 &Element->Text[info->DrawOfs]
  47                 );
  48
  49         // TODO: Determine if this element has focus
  50         if( wininfo->FocusedElement == Element )
  51         {
  52                 // TODO: Multiple Cursors
  53                 WM_Render_SetTextCursor(Window,
  54                         Element->CachedX+2+info->CursorXOfs,
  55                         Element->CachedY+2,
  56                         Element->CachedW-4, 1,
  57                         TEXTINPUT_TEXT
  58                         );
  59         }
  60 }
  61
  62 void Widget_TextInput_Init(tElement *Element)
  63 {
  64         struct sTextInputInfo   *info;
  65          int    h;
  66
  67         // TODO: Select font correctly
  68         WM_Render_GetTextDims(NULL, "jJ", NULL, &h);
  69
  70         h += 2+2;       // Border padding
  71
  72         Element->MinH = h;
  73         Element->MinW = 4;
  74
  75         info = Element->Data = malloc(sizeof(*info));
  76         info->DrawOfs = 0;
  77         info->CursorXOfs = 0;
  78
  79         // No need to explicitly update parent min dims, as the AddElement routine does that
  80 }
  81
  82 DEFWIDGETTYPE(ELETYPE_TEXTINPUT,
  83         WIDGETTYPE_FLAG_NOCHILDREN,
  84         .Render = Widget_TextInput_Render,
  85         .Init = Widget_TextInput_Init
  86         );
  87