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https://github.com/electronicarts/CnC_Renegade.git
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Initial commit of Command & Conquer Renegade source code.
This commit is contained in:
LFeenanEA
486
Code/wwui/multilinetextctrl.cpp
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486
Code/wwui/multilinetextctrl.cpp
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/*
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** Command & Conquer Renegade(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/***********************************************************************************************
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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : wwui *
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* *
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* $Archive:: /Commando/Code/wwui/multilinetextctrl.cpp $*
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* *
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* Author:: Patrick Smith *
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* *
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* $Modtime:: 1/09/02 5:57p $*
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* *
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* $Revision:: 6 $*
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#include "multilinetextctrl.h"
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#include "assetmgr.h"
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#include "stylemgr.h"
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#include "dialogbase.h"
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#include <winuser.h>
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//////////////////////////////////////////////////////////////////////
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//
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// MultiLineTextCtrlClass
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//
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//////////////////////////////////////////////////////////////////////
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MultiLineTextCtrlClass::MultiLineTextCtrlClass (void) :
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ScrollPos (0),
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IsScrollBarDisplayed (false),
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IsInitialized (false),
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RowCount (0),
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RowsPerPage (0)
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{
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UINT scrolllines;
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//
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// Configure the renderers
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//
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StyleMgrClass::Assign_Font (&TextRenderer, StyleMgrClass::FONT_CONTROLS);
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StyleMgrClass::Configure_Renderer (&ControlRenderer);
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TextRenderer.Set_Texture_Size_Hint (256);
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//
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// We don't want the scroll bar getting focus
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//
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ScrollBarCtrl.Set_Wants_Focus (false);
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ScrollBarCtrl.Set_Advise_Sink (this);
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ScrollBarCtrl.Set_Is_Embedded (true);
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// Calculate the no. of lines to scroll for each mouse wheel increment.
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SystemParametersInfo (SPI_GETWHEELSCROLLLINES, 0, &scrolllines, 0);
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MouseWheelIncrement = ((float) scrolllines) / ((float) WHEEL_DELTA);
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return ;
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}
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//////////////////////////////////////////////////////////////////////
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//
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// ~MultiLineTextCtrlClass
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//
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//////////////////////////////////////////////////////////////////////
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MultiLineTextCtrlClass::~MultiLineTextCtrlClass (void)
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{
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ScrollBarCtrl.Set_Advise_Sink (NULL);
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if (Parent != NULL) {
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Parent->Remove_Control (&ScrollBarCtrl);
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}
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return ;
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}
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//////////////////////////////////////////////////////////////////////
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//
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// Create_Control_Renderer
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//
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//////////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::Create_Control_Renderer (void)
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{
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Render2DClass &renderer = ControlRenderer;
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//
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// Configure this renderer
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//
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renderer.Reset ();
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renderer.Enable_Texturing (false);
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//
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// Determine which color to draw the outline in
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//
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int color = StyleMgrClass::Get_Line_Color ();
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int bkcolor = StyleMgrClass::Get_Bk_Color ();
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if (IsEnabled == false) {
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color = StyleMgrClass::Get_Disabled_Line_Color ();
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bkcolor = StyleMgrClass::Get_Disabled_Bk_Color ();
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}
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//
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// Draw the control's outline
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//
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renderer.Add_Outline (Rect, 1.0F, color);
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return ;
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}
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//////////////////////////////////////////////////////////////////////
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//
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// Create_Text_Renderer
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//
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//////////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::Create_Text_Renderer (void)
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{
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TextRenderer.Reset ();
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//
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// Handy macro
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//
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#define COPY_LINE(dest, src_start, src_end) \
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if (src_end == NULL) { \
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dest = src_start; \
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} else { \
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uint32 bytes = ((uint32)src_end - (uint32)src_start); \
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uint32 len = bytes / sizeof (WCHAR); \
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::memcpy (dest.Get_Buffer (len + 1), src_start, bytes); \
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dest.Peek_Buffer ()[len] = 0; \
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}
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//
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// Determine where to start drawing the text from
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//
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const WCHAR *text_start = TextRenderer.Find_Row_Start (Title, ScrollPos);
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const WCHAR *text_end = TextRenderer.Find_Row_Start (Title, ScrollPos+RowsPerPage);
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if (text_start != NULL) {
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//
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// Should we draw the text centered?
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//
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if ((Style & ES_CENTER) == ES_CENTER) {
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float char_height = TextRenderer.Peek_Font ()->Get_Char_Height ();
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RectClass text_rect = ClientRect;
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//
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// Render each line separately
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//
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const WCHAR *line_start = text_start;
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const WCHAR *line_end = TextRenderer.Find_Row_Start (Title, ScrollPos + 1);
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for (int index = 0; index < RowsPerPage; index ++) {
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//
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// Copy this line of text into a buffer
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//
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WideStringClass text;
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COPY_LINE (text, line_start, line_end);
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//
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// Render this line of text centered
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//
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TextRenderer.Set_Wrapping_Width (0);
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StyleMgrClass::Render_Text (text, &TextRenderer, text_rect, true, true, StyleMgrClass::CENTER_JUSTIFY, IsEnabled, false);
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text_rect.Top = int (text_rect.Top + char_height);
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TextRenderer.Set_Wrapping_Width (ClientRect.Width ());
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if (line_end == NULL) {
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break;
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}
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//
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// Advance to the next line...
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//
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line_start = line_end;
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line_end = TextRenderer.Find_Row_Start (line_start, 1);
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}
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} else {
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WideStringClass text;
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COPY_LINE (text, text_start, text_end);
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//
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// Draw the text
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//
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StyleMgrClass::Render_Wrapped_Text (text, &TextRenderer, ClientRect, true, false, IsEnabled);
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}
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}
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return ;
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}
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////////////////////////////////////////////////////////////////
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//
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// Render
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//
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////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::Render (void)
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{
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//
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// Recreate the renderers (if necessary)
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//
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if (IsDirty) {
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Update_Scroll_Bar_Visibility ();
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Create_Control_Renderer ();
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Create_Text_Renderer ();
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}
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//
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// Render the image...
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//
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ControlRenderer.Render ();
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TextRenderer.Render ();
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DialogControlClass::Render ();
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return ;
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}
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////////////////////////////////////////////////////////////////
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//
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// Update_Client_Rect
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//
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////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::Update_Client_Rect (void)
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{
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//
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// Set the client area
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//
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ClientRect = Rect;
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ClientRect.Inflate (Vector2 (-5.0F * StyleMgrClass::Get_X_Scale (), -3.75F * StyleMgrClass::Get_Y_Scale ()));
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ClientRect.Left = int(ClientRect.Left);
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ClientRect.Top = int(ClientRect.Top);
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ClientRect.Right = int(ClientRect.Right);
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ClientRect.Bottom = int(ClientRect.Bottom);
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//
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// Determine how many rows we can fit on one page
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//
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float char_height = TextRenderer.Peek_Font ()->Get_Char_Height ();
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RowsPerPage = ClientRect.Height () / char_height;
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IsInitialized = true;
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//
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// Choose an arbitrary width, the scroll bar
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// will snap to the only width it supports
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//
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float width = 10;
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//
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// Calculate the scroll bar's rectangle
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//
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RectClass scroll_rect;
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scroll_rect.Left = Rect.Right - width;
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scroll_rect.Top = Rect.Top;
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scroll_rect.Right = Rect.Right;
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scroll_rect.Bottom = Rect.Bottom;
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//
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// Size the scroll bar
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//
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ScrollBarCtrl.Set_Window_Rect (scroll_rect);
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ScrollBarCtrl.Set_Small_BMP_Mode ((Rect.Height () < (StyleMgrClass::Get_Y_Scale () * 100.0F)));
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//Update_Scroll_Bar_Visibility ();
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Set_Dirty ();
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return ;
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}
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////////////////////////////////////////////////////////////////
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//
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// Update_Scroll_Bar_Visibility
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//
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////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::Update_Scroll_Bar_Visibility (void)
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{
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if (IsInitialized == false ) {
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return ;
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}
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Calculate_Row_Count ();
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//
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// Determine if we have more entries then we can
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// display on one page
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//
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bool needs_scrollbar = (RowCount > RowsPerPage);
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float new_right = 0;
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if (needs_scrollbar != IsScrollBarDisplayed) {
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//
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// Do we need to show a scroll bar?
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//
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if (needs_scrollbar) {
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new_right = ScrollBarCtrl.Get_Window_Rect ().Left;
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IsScrollBarDisplayed = true;
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} else if (Parent != NULL) {
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new_right = ScrollBarCtrl.Get_Window_Rect ().Right;
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IsScrollBarDisplayed = false;
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}
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//
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// Reset our window size (as necessary)
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//
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Rect.Right = new_right;
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ClientRect = Rect;
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ClientRect.Inflate (Vector2 (-5.0F * StyleMgrClass::Get_X_Scale (), -3.75F * StyleMgrClass::Get_Y_Scale ()));
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ClientRect.Left = int(ClientRect.Left);
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ClientRect.Top = int(ClientRect.Top);
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ClientRect.Right = int(ClientRect.Right);
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ClientRect.Bottom = int(ClientRect.Bottom);
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Calculate_Row_Count ();
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//
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// Add or remove the scrollbar (as necessary)
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//
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if (IsScrollBarDisplayed) {
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Parent->Add_Control (&ScrollBarCtrl);
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} else {
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Parent->Remove_Control (&ScrollBarCtrl);
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}
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}
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//
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// Configure the scroll-bar's ranges
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//
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ScrollBarCtrl.Set_Page_Size (RowsPerPage);
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ScrollBarCtrl.Set_Range (0, RowCount - RowsPerPage);
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ScrollBarCtrl.Set_Pos (ScrollPos);
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ScrollPos = ScrollBarCtrl.Get_Pos ();
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return ;
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}
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////////////////////////////////////////////////////////////////
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//
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// Calculate_Row_Count
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//
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////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::Calculate_Row_Count (void)
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{
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TextRenderer.Set_Wrapping_Width (ClientRect.Width ());
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//
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// Get the number of rows we'll need to display
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//
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RowCount = 0;
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TextRenderer.Get_Formatted_Text_Extents (Title, &RowCount);
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return ;
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}
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////////////////////////////////////////////////////////////////
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//
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// On_Key_Down
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//
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////////////////////////////////////////////////////////////////
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bool
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MultiLineTextCtrlClass::On_Key_Down (uint32 key_id, uint32 key_data)
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{
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switch (key_id)
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{
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case VK_UP:
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Set_Scroll_Pos (ScrollPos - 1);
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break;
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case VK_DOWN:
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Set_Scroll_Pos (ScrollPos + 1);
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break;
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case VK_PRIOR:
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Set_Scroll_Pos (ScrollPos - RowsPerPage);
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break;
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case VK_NEXT:
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Set_Scroll_Pos (ScrollPos + RowsPerPage);
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break;
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case VK_HOME:
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Set_Scroll_Pos (0);
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break;
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case VK_END:
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Set_Scroll_Pos (RowCount);
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break;
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}
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return true;
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}
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////////////////////////////////////////////////////////////////
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//
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// On_VScroll
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//
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////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::On_VScroll (ScrollBarCtrlClass *, int , int new_position)
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{
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Set_Scroll_Pos (new_position);
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return ;
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}
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////////////////////////////////////////////////////////////////
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//
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// On_Mouse_Wheel
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//
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////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::On_Mouse_Wheel (int direction)
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{
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int lineoffset = direction * MouseWheelIncrement;
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Set_Scroll_Pos (ScrollPos + lineoffset);
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return ;
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}
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////////////////////////////////////////////////////////////////
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//
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// Set_Scroll_Pos
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//
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////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::Set_Scroll_Pos (int new_position)
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{
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if (ScrollPos != new_position) {
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ScrollPos = new_position;
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ScrollPos = min (ScrollPos, RowCount - RowsPerPage);
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ScrollPos = max (ScrollPos, 0);
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ScrollBarCtrl.Set_Pos (ScrollPos, false);
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Set_Dirty ();
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}
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return ;
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}
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////////////////////////////////////////////////////////////////
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//
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// Set_Text
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//
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////////////////////////////////////////////////////////////////
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void
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MultiLineTextCtrlClass::Set_Text (const WCHAR *title)
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{
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DialogControlClass::Set_Text (title);
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ScrollPos = 0;
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RowCount = 0;
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//Update_Scroll_Bar_Visibility ();
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return ;
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}
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Reference in New Issue
Block a user