mirror of https://github.com/ZDoom/raze-gles.git
344 lines
8.0 KiB
C++
344 lines
8.0 KiB
C++
/*
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** c_commandbuffer.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2006 Randy Heit
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** Copyright 2010-2020 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "c_commandbuffer.h"
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#include "v_draw.h"
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#include "v_2ddrawer.h"
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#include "v_font.h"
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#include "utf8.h"
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FCommandBuffer CmdLine;
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FCommandBuffer::FCommandBuffer(const FCommandBuffer &o)
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{
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Text = o.Text;
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CursorPos = o.CursorPos;
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StartPos = o.StartPos;
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}
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FString FCommandBuffer::GetText() const
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{
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FString build;
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for (auto chr : Text) build.AppendCharacter(chr);
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return build;
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}
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void FCommandBuffer::Draw(int x, int y, int scale, bool cursor)
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{
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if (scale == 1)
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{
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DrawChar(twod, CurrentConsoleFont, CR_ORANGE, x, y, '\x1c', TAG_DONE);
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DrawText(twod, CurrentConsoleFont, CR_ORANGE, x + CurrentConsoleFont->GetCharWidth(0x1c), y,
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&Text[StartPos], TAG_DONE);
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if (cursor)
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{
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DrawChar(twod, CurrentConsoleFont, CR_YELLOW,
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x + CurrentConsoleFont->GetCharWidth(0x1c) + (CursorPosCells - StartPosCells) * CurrentConsoleFont->GetCharWidth(0xb),
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y, '\xb', TAG_DONE);
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}
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}
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else
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{
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DrawChar(twod, CurrentConsoleFont, CR_ORANGE, x, y, '\x1c',
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DTA_VirtualWidth, twod->GetWidth() / scale,
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DTA_VirtualHeight, twod->GetHeight() / scale,
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DTA_KeepRatio, true, TAG_DONE);
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DrawText(twod, CurrentConsoleFont, CR_ORANGE, x + CurrentConsoleFont->GetCharWidth(0x1c), y,
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&Text[StartPos],
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DTA_VirtualWidth, twod->GetWidth() / scale,
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DTA_VirtualHeight, twod->GetHeight() / scale,
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DTA_KeepRatio, true, TAG_DONE);
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if (cursor)
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{
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DrawChar(twod, CurrentConsoleFont, CR_YELLOW,
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x + CurrentConsoleFont->GetCharWidth(0x1c) + (CursorPosCells - StartPosCells) * CurrentConsoleFont->GetCharWidth(0xb),
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y, '\xb',
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DTA_VirtualWidth, twod->GetWidth() / scale,
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DTA_VirtualHeight, twod->GetHeight() / scale,
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DTA_KeepRatio, true, TAG_DONE);
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}
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}
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}
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unsigned FCommandBuffer::CalcCellSize(unsigned length)
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{
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unsigned cellcount = 0;
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for (unsigned i = 0; i < length; i++)
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{
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int w;
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NewConsoleFont->GetChar(Text[i], CR_UNTRANSLATED, &w);
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cellcount += w / 9;
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}
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return cellcount;
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}
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unsigned FCommandBuffer::CharsForCells(unsigned cellin, bool *overflow)
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{
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unsigned chars = 0;
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int cells = cellin;
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while (cells > 0)
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{
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int w;
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NewConsoleFont->GetChar(Text[chars++], CR_UNTRANSLATED, &w);
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cells -= w / 9;
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}
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*overflow = (cells < 0);
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return chars;
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}
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void FCommandBuffer::MakeStartPosGood()
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{
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// Make sure both values point to something valid.
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if (CursorPos > Text.length()) CursorPos = (unsigned)Text.length();
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if (StartPos > Text.length()) StartPos = (unsigned)Text.length();
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CursorPosCells = CalcCellSize(CursorPos);
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StartPosCells = CalcCellSize(StartPos);
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unsigned LengthCells = CalcCellSize((unsigned)Text.length());
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int n = StartPosCells;
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unsigned cols = ConCols / active_con_scale(twod);
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if (StartPosCells >= LengthCells)
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{ // Start of visible line is beyond end of line
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n = CursorPosCells - cols + 2;
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}
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if ((CursorPosCells - StartPosCells) >= cols - 2)
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{ // The cursor is beyond the visible part of the line
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n = CursorPosCells - cols + 2;
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}
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if (StartPosCells > CursorPosCells)
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{ // The cursor is in front of the visible part of the line
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n = CursorPosCells;
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}
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StartPosCells = std::max(0, n);
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bool overflow;
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StartPos = CharsForCells(StartPosCells, &overflow);
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if (overflow)
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{
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// We ended up in the middle of a double cell character, so set the start to the following character.
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StartPosCells++;
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StartPos = CharsForCells(StartPosCells, &overflow);
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}
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}
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void FCommandBuffer::CursorStart()
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{
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CursorPos = 0;
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StartPos = 0;
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CursorPosCells = 0;
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StartPosCells = 0;
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}
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void FCommandBuffer::CursorEnd()
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{
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CursorPos = (unsigned)Text.length();
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MakeStartPosGood();
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}
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void FCommandBuffer::CursorLeft()
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{
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if (CursorPos > 0)
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{
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MoveCursorLeft();
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MakeStartPosGood();
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}
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}
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void FCommandBuffer::CursorRight()
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{
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if (CursorPos < Text.length())
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{
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MoveCursorRight();
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MakeStartPosGood();
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}
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}
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void FCommandBuffer::CursorWordLeft()
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{
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if (CursorPos > 0)
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{
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do MoveCursorLeft();
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while (CursorPos > 0 && Text[CursorPos - 1] != ' ');
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MakeStartPosGood();
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}
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}
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void FCommandBuffer::CursorWordRight()
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{
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if (CursorPos < Text.length())
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{
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do MoveCursorRight();
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while (CursorPos < Text.length() && Text[CursorPos] != ' ');
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MakeStartPosGood();
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}
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}
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void FCommandBuffer::DeleteLeft()
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{
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if (CursorPos > 0)
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{
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MoveCursorLeft();
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Text.erase(CursorPos, 1);
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MakeStartPosGood();
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}
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}
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void FCommandBuffer::DeleteRight()
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{
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if (CursorPos < Text.length())
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{
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Text.erase(CursorPos, 1);
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MakeStartPosGood();
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}
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}
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void FCommandBuffer::DeleteWordLeft()
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{
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if (CursorPos > 0)
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{
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auto now = CursorPos;
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CursorWordLeft();
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if (AppendToYankBuffer) {
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YankBuffer = Text.substr(CursorPos, now - CursorPos) + YankBuffer;
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} else {
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YankBuffer = Text.substr(CursorPos, now - CursorPos);
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}
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Text.erase(CursorPos, now - CursorPos);
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MakeStartPosGood();
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}
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}
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void FCommandBuffer::DeleteLineLeft()
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{
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if (CursorPos > 0)
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{
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if (AppendToYankBuffer) {
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YankBuffer = Text.substr(0, CursorPos) + YankBuffer;
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} else {
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YankBuffer = Text.substr(0, CursorPos);
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}
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Text.erase(0, CursorPos);
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CursorStart();
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}
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}
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void FCommandBuffer::DeleteLineRight()
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{
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if (CursorPos < Text.length())
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{
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if (AppendToYankBuffer) {
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YankBuffer += Text.substr(CursorPos, Text.length() - CursorPos);
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} else {
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YankBuffer = Text.substr(CursorPos, Text.length() - CursorPos);
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}
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Text.resize(CursorPos);
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CursorEnd();
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}
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}
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void FCommandBuffer::AddChar(int character)
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{
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if (Text.length() == 0)
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{
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Text += character;
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}
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else
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{
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Text.insert(CursorPos, 1, character);
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}
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CursorPos++;
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MakeStartPosGood();
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}
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void FCommandBuffer::AddString(FString clip)
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{
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if (clip.IsNotEmpty())
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{
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// Only paste the first line.
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long brk = clip.IndexOfAny("\r\n\b");
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std::u32string build;
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if (brk >= 0)
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{
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clip.Truncate(brk);
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}
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auto strp = (const uint8_t*)clip.GetChars();
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while (auto chr = GetCharFromString(strp)) build += chr;
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if (Text.length() == 0)
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{
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Text = build;
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}
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else
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{
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Text.insert(CursorPos, build);
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}
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CursorPos += (unsigned)build.length();
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MakeStartPosGood();
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}
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}
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void FCommandBuffer::SetString(const FString &str)
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{
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Text.clear();
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auto strp = (const uint8_t*)str.GetChars();
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while (auto chr = GetCharFromString(strp)) Text += chr;
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CursorEnd();
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MakeStartPosGood();
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}
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void FCommandBuffer::AddYankBuffer()
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{
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if (YankBuffer.length() > 0)
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{
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if (Text.length() == 0)
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{
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Text = YankBuffer;
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}
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else
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{
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Text.insert(CursorPos, YankBuffer);
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}
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CursorPos += (unsigned)YankBuffer.length();
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MakeStartPosGood();
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}
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}
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