mirror of https://github.com/OpenRCT2/OpenRCT2.git
138 lines
4.0 KiB
C++
138 lines
4.0 KiB
C++
/*****************************************************************************
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* Copyright (c) 2014-2019 OpenRCT2 developers
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*
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* For a complete list of all authors, please refer to contributors.md
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* Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
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*
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* OpenRCT2 is licensed under the GNU General Public License version 3.
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*****************************************************************************/
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#include "CursorRepository.h"
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#include <cmath>
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#include <openrct2/common.h>
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#include <openrct2/config/Config.h>
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#include <openrct2/core/Guard.hpp>
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#include <openrct2/interface/Cursors.h>
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using namespace OpenRCT2::Ui;
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CursorRepository::~CursorRepository()
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{
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_scaledCursors.clear();
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_currentCursor = CURSOR_UNDEFINED;
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_currentCursorScale = 1;
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}
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void CursorRepository::LoadCursors()
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{
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SetCursorScale(static_cast<uint8_t>(round(gConfigGeneral.window_scale)));
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SetCurrentCursor(CURSOR_ARROW);
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}
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CURSOR_ID CursorRepository::GetCurrentCursor()
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{
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return _currentCursor;
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}
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void CursorRepository::SetCurrentCursor(CURSOR_ID cursorId)
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{
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if (_currentCursor != cursorId)
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{
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SDL_Cursor* cursor = _scaledCursors.at(_currentCursorScale).getScaledCursor(cursorId);
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SDL_SetCursor(cursor);
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_currentCursor = cursorId;
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}
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}
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static bool getBit(const uint8_t* data, size_t x, size_t y, size_t width)
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{
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size_t position = y * width + x;
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return (data[position / 8] & (1 << (7 - (x % 8)))) != 0;
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}
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static void setBit(uint8_t* data, size_t x, size_t y, size_t width)
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{
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size_t position = y * width + x;
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data[position / 8] |= (1 << (7 - (position % 8)));
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}
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static void drawRect(uint8_t* data, size_t x, size_t y, size_t width, size_t scale)
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{
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for (size_t outY = (y * scale); outY < ((1 + y) * scale); outY++)
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{
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for (size_t outX = (x * scale); outX < ((1 + x) * scale); outX++)
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{
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setBit(data, outX, outY, width * scale);
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}
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}
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}
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static uint8_t* scaleDataArray(const uint8_t data[], size_t width, size_t height, size_t scale)
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{
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size_t length = width * height;
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auto* ret = static_cast<uint8_t*>(calloc(sizeof(uint8_t), length * scale * scale));
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for (size_t y = 0; y < height * 8; y++)
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{
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for (size_t x = 0; x < width; x++)
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{
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bool value = getBit(data, x, y, width);
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if (!value)
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continue;
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drawRect(ret, x, y, width, scale);
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}
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}
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return ret;
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}
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SDL_Cursor* CursorRepository::Create(const CursorData* cursorInfo, uint8_t scale)
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{
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SDL_Cursor* cursor;
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auto integer_scale = (int)round(scale);
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auto data = scaleDataArray(cursorInfo->Data, CURSOR_BIT_WIDTH, CURSOR_HEIGHT, static_cast<size_t>(integer_scale));
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auto mask = scaleDataArray(cursorInfo->Mask, CURSOR_BIT_WIDTH, CURSOR_HEIGHT, static_cast<size_t>(integer_scale));
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cursor = SDL_CreateCursor(
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data, mask, BASE_CURSOR_WIDTH * integer_scale, BASE_CURSOR_HEIGHT * integer_scale,
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cursorInfo->HotSpot.X * integer_scale, cursorInfo->HotSpot.Y * integer_scale);
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free(data);
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free(mask);
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return cursor;
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}
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void CursorRepository::SetCursorScale(uint8_t cursorScale)
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{
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if (cursorScale > 0.0)
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{
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_currentCursorScale = cursorScale;
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GenerateScaledCursorSetHolder(_currentCursorScale);
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}
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}
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void CursorRepository::GenerateScaledCursorSetHolder(uint8_t scale)
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{
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if (_scaledCursors.find(scale) == _scaledCursors.end())
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{
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std::function<SDL_Cursor*(CURSOR_ID)> cursorGenerator = [this, scale](CURSOR_ID cursorId) {
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switch (cursorId)
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{
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// We can't scale the system cursors, but they should be appropriately scaled anyway
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case CURSOR_ARROW:
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return SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
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case CURSOR_HAND_POINT:
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return SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
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default:
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return this->Create(GetCursorData(cursorId), scale);
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}
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};
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_scaledCursors.emplace(scale, cursorGenerator);
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}
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}
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