Milestone 5: deliver embedded RDP sessions and lifecycle hardening
This commit is contained in:
Keith Smith
254
third_party/FreeRDP/client/SDL/SDL3/sdl_pointer.cpp
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254
third_party/FreeRDP/client/SDL/SDL3/sdl_pointer.cpp
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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Wayland Mouse Pointer
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*
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* Copyright 2023 Armin Novak <armin.novak@thincast.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <freerdp/config.h>
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#include <freerdp/gdi/gdi.h>
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#include "sdl_pointer.hpp"
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#include "sdl_context.hpp"
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#include "sdl_touch.hpp"
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#include "sdl_utils.hpp"
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#include <SDL3/SDL_mouse.h>
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typedef struct
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{
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rdpPointer pointer;
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SDL_Cursor* cursor;
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SDL_Surface* image;
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size_t size;
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void* data;
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} sdlPointer;
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[[nodiscard]] static BOOL sdl_Pointer_New(rdpContext* context, rdpPointer* pointer)
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{
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auto ptr = reinterpret_cast<sdlPointer*>(pointer);
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WINPR_ASSERT(context);
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if (!ptr)
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return FALSE;
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rdpGdi* gdi = context->gdi;
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WINPR_ASSERT(gdi);
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ptr->size = 4ull * pointer->width * pointer->height;
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ptr->data = winpr_aligned_malloc(ptr->size, 16);
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if (!ptr->data)
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return FALSE;
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auto data = static_cast<BYTE*>(ptr->data);
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if (!freerdp_image_copy_from_pointer_data(
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data, gdi->dstFormat, 0, 0, 0, pointer->width, pointer->height, pointer->xorMaskData,
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pointer->lengthXorMask, pointer->andMaskData, pointer->lengthAndMask, pointer->xorBpp,
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&context->gdi->palette))
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{
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winpr_aligned_free(ptr->data);
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ptr->data = nullptr;
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return FALSE;
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}
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return TRUE;
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}
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static void sdl_Pointer_Clear(sdlPointer* ptr)
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{
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WINPR_ASSERT(ptr);
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SDL_DestroyCursor(ptr->cursor);
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SDL_DestroySurface(ptr->image);
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ptr->cursor = nullptr;
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ptr->image = nullptr;
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}
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static void sdl_Pointer_Free(rdpContext* context, rdpPointer* pointer)
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{
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auto ptr = reinterpret_cast<sdlPointer*>(pointer);
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WINPR_UNUSED(context);
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if (ptr)
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{
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sdl_Pointer_Clear(ptr);
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winpr_aligned_free(ptr->data);
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ptr->data = nullptr;
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}
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}
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[[nodiscard]] static BOOL sdl_Pointer_SetDefault(rdpContext* context)
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{
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WINPR_UNUSED(context);
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return sdl_push_user_event(SDL_EVENT_USER_POINTER_DEFAULT);
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}
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[[nodiscard]] static BOOL sdl_Pointer_Set(rdpContext* context, rdpPointer* pointer)
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{
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WINPR_UNUSED(context);
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return sdl_push_user_event(SDL_EVENT_USER_POINTER_SET, pointer);
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}
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bool sdl_Pointer_Set_Process(SdlContext* sdl)
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{
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WINPR_ASSERT(sdl);
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auto context = sdl->context();
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auto pointer = sdl->cursor();
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auto ptr = reinterpret_cast<sdlPointer*>(pointer);
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if (!ptr)
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return true;
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rdpGdi* gdi = context->gdi;
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WINPR_ASSERT(gdi);
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auto ix = static_cast<float>(pointer->xPos);
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auto iy = static_cast<float>(pointer->yPos);
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auto isw = static_cast<float>(pointer->width);
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auto ish = static_cast<float>(pointer->height);
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auto window = SDL_GetMouseFocus();
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if (!window)
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return sdl_Pointer_SetDefault(context);
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const Uint32 id = SDL_GetWindowID(window);
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const SDL_FRect orig{ ix, iy, isw, ish };
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auto pos = sdl->pixelToScreen(id, orig);
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WLog_Print(sdl->getWLog(), WLOG_DEBUG, "cursor scale: pixel:%s, display:%s",
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sdl::utils::toString(orig).c_str(), sdl::utils::toString(pos).c_str());
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sdl_Pointer_Clear(ptr);
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ptr->image =
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SDL_CreateSurface(static_cast<int>(orig.w), static_cast<int>(orig.h), sdl->pixelFormat());
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if (!ptr->image)
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "SDL_CreateSurface failed");
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return false;
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}
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if (!SDL_LockSurface(ptr->image))
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "SDL_LockSurface failed");
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return false;
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}
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auto pixels = static_cast<BYTE*>(ptr->image->pixels);
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auto data = static_cast<const BYTE*>(ptr->data);
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const BOOL rc = freerdp_image_scale(
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pixels, gdi->dstFormat, static_cast<UINT32>(ptr->image->pitch), 0, 0,
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static_cast<UINT32>(ptr->image->w), static_cast<UINT32>(ptr->image->h), data,
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gdi->dstFormat, 0, 0, 0, static_cast<UINT32>(isw), static_cast<UINT32>(ish));
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SDL_UnlockSurface(ptr->image);
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if (!rc)
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "freerdp_image_scale failed");
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return false;
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}
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// create a cursor image in 100% display scale to trick SDL into creating the cursor with the
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// correct size
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auto fw = sdl->getFirstWindow();
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if (!fw)
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "sdl->getFirstWindow() nullptr");
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return false;
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}
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const auto hidpi_scale =
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sdl->pixelToScreen(fw->id(), SDL_FPoint{ static_cast<float>(ptr->image->w),
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static_cast<float>(ptr->image->h) });
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std::unique_ptr<SDL_Surface, void (*)(SDL_Surface*)> normal{
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SDL_CreateSurface(static_cast<int>(hidpi_scale.x), static_cast<int>(hidpi_scale.y),
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ptr->image->format),
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SDL_DestroySurface
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};
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assert(normal);
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if (!SDL_BlitSurfaceScaled(ptr->image, nullptr, normal.get(), nullptr,
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SDL_ScaleMode::SDL_SCALEMODE_LINEAR))
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "SDL_BlitSurfaceScaled failed");
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return false;
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}
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if (!SDL_AddSurfaceAlternateImage(normal.get(), ptr->image))
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "SDL_AddSurfaceAlternateImage failed");
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return false;
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}
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ptr->cursor =
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SDL_CreateColorCursor(normal.get(), static_cast<int>(pos.x), static_cast<int>(pos.y));
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if (!ptr->cursor)
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "SDL_CreateColorCursor(display:%s, pixel:%s} failed",
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sdl::utils::toString(pos).c_str(), sdl::utils::toString(orig).c_str());
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return false;
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}
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if (!SDL_SetCursor(ptr->cursor))
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "SDL_SetCursor failed");
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return false;
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}
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if (!SDL_ShowCursor())
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{
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WLog_Print(sdl->getWLog(), WLOG_ERROR, "SDL_ShowCursor failed");
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return false;
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}
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sdl->setHasCursor(true);
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return true;
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}
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[[nodiscard]] static BOOL sdl_Pointer_SetNull(rdpContext* context)
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{
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WINPR_UNUSED(context);
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return sdl_push_user_event(SDL_EVENT_USER_POINTER_NULL);
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}
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[[nodiscard]] static BOOL sdl_Pointer_SetPosition(rdpContext* context, UINT32 x, UINT32 y)
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{
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WINPR_UNUSED(context);
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WINPR_ASSERT(context);
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return sdl_push_user_event(SDL_EVENT_USER_POINTER_POSITION, x, y);
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}
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bool sdl_register_pointer(rdpGraphics* graphics)
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{
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const rdpPointer pointer = { sizeof(sdlPointer),
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sdl_Pointer_New,
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sdl_Pointer_Free,
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sdl_Pointer_Set,
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sdl_Pointer_SetNull,
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sdl_Pointer_SetDefault,
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sdl_Pointer_SetPosition,
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{},
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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nullptr,
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nullptr,
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{} };
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graphics_register_pointer(graphics, &pointer);
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return true;
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}
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