From f2d65183113670625668d607a2650579acf1c632 Mon Sep 17 00:00:00 2001 From: Bananymous Date: Mon, 3 Jun 2024 18:00:50 +0300 Subject: [PATCH] LibGUI: Add new drawing APIs to LibGUI::Window --- LibGUI/CMakeLists.txt | 2 +- LibGUI/Window.cpp | 91 ++++++++++++++++++++++++++++++++-- LibGUI/include/LibGUI/Window.h | 15 +++++- 3 files changed, 101 insertions(+), 7 deletions(-) diff --git a/LibGUI/CMakeLists.txt b/LibGUI/CMakeLists.txt index a915ad59..5cd0f649 100644 --- a/LibGUI/CMakeLists.txt +++ b/LibGUI/CMakeLists.txt @@ -13,7 +13,7 @@ add_custom_target(libgui-headers add_library(libgui ${LIBGUI_SOURCES}) add_dependencies(libgui headers libc-install) -target_link_libraries(libgui PUBLIC libc) +target_link_libraries(libgui PUBLIC libc libfont) add_custom_target(libgui-install COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_BINARY_DIR}/libgui.a ${BANAN_LIB}/ diff --git a/LibGUI/Window.cpp b/LibGUI/Window.cpp index e000aa99..7305a617 100644 --- a/LibGUI/Window.cpp +++ b/LibGUI/Window.cpp @@ -1,5 +1,7 @@ #include "LibGUI/Window.h" +#include + #include #include #include @@ -86,13 +88,92 @@ namespace LibGUI )); } - bool Window::invalidate() + void Window::fill_rect(int32_t x, int32_t y, uint32_t width, uint32_t height, uint32_t color) { + if (!clamp_to_framebuffer(x, y, width, height)) + return; + for (uint32_t y_off = 0; y_off < height; y_off++) + for (uint32_t x_off = 0; x_off < width; x_off++) + set_pixel(x + x_off, y + y_off, color); + } + + void Window::draw_character(uint32_t codepoint, const LibFont::Font& font, int32_t tl_x, int32_t tl_y, uint32_t color) + { + if (tl_y + (int32_t)font.height() < 0 || tl_y >= (int32_t)height()) + return; + if (tl_x + (int32_t)font.width() < 0 || tl_x >= (int32_t)width()) + return; + + auto glyph = font.glyph(codepoint); + if (glyph == nullptr) + return; + + for (int32_t off_y = 0; off_y < (int32_t)font.height(); off_y++) + { + if (tl_y + off_y < 0) + continue; + uint32_t abs_y = tl_y + off_y; + if (abs_y >= height()) + break; + for (int32_t off_x = 0; off_x < (int32_t)font.width(); off_x++) + { + if (tl_x + off_x < 0) + continue; + uint32_t abs_x = tl_x + off_x; + if (abs_x >= width()) + break; + const uint8_t bitmask = 1 << (font.width() - off_x - 1); + if (glyph[off_y * font.pitch()] & bitmask) + set_pixel(abs_x, abs_y, color); + } + } + } + + void Window::draw_text(BAN::StringView text, const LibFont::Font& font, int32_t tl_x, int32_t tl_y, uint32_t color) + { + for (size_t i = 0; i < text.size(); i++) + draw_character(text[i], font, tl_x + (int32_t)(i * font.width()), tl_y, color); + } + + void Window::shift_vertical(int32_t amount) + { + uint32_t amount_abs = BAN::Math::abs(amount); + if (amount_abs == 0 || amount_abs >= height()) + return; + uint32_t* dst = (amount > 0) ? m_framebuffer + width() * amount_abs : m_framebuffer; + uint32_t* src = (amount < 0) ? m_framebuffer + width() * amount_abs : m_framebuffer; + memmove(dst, src, width() * (height() - amount_abs) * 4); + } + + bool Window::clamp_to_framebuffer(int32_t& signed_x, int32_t& signed_y, uint32_t& width, uint32_t& height) const + { + int32_t min_x = BAN::Math::max(signed_x, 0); + int32_t min_y = BAN::Math::max(signed_y, 0); + int32_t max_x = BAN::Math::min(this->width(), signed_x + (int32_t)width); + int32_t max_y = BAN::Math::min(this->height(), signed_y + (int32_t)height); + + if (min_x >= max_x) + return false; + if (min_y >= max_y) + return false; + + signed_x = min_x; + signed_y = min_y; + width = max_x - min_x; + height = max_y - min_y; + return true; + } + + bool Window::invalidate(int32_t x, int32_t y, uint32_t width, uint32_t height) + { + if (!clamp_to_framebuffer(x, y, width, height)) + return true; + WindowInvalidatePacket packet; - packet.x = 0; - packet.y = 0; - packet.width = m_width; - packet.height = m_height; + packet.x = x; + packet.y = y; + packet.width = width; + packet.height = height; return send(m_server_fd, &packet, sizeof(packet), 0) == sizeof(packet); } diff --git a/LibGUI/include/LibGUI/Window.h b/LibGUI/include/LibGUI/Window.h index 1e473bf5..c88a4e2e 100644 --- a/LibGUI/include/LibGUI/Window.h +++ b/LibGUI/include/LibGUI/Window.h @@ -10,6 +10,8 @@ #include #include +namespace LibFont { class Font; } + namespace LibGUI { @@ -110,7 +112,16 @@ namespace LibGUI m_framebuffer[y * m_width + x] = color; } - bool invalidate(); + void fill_rect(int32_t x, int32_t y, uint32_t width, uint32_t height, uint32_t color); + void fill(uint32_t color) { return fill_rect(0, 0, width(), height(), color); } + + void draw_character(uint32_t codepoint, const LibFont::Font& font, int32_t x, int32_t y, uint32_t color); + void draw_text(BAN::StringView text, const LibFont::Font& font, int32_t x, int32_t y, uint32_t color); + + void shift_vertical(int32_t amount); + + bool invalidate(int32_t x, int32_t y, uint32_t width, uint32_t height); + bool invalidate() { return invalidate(0, 0, width(), height()); } uint32_t width() const { return m_width; } uint32_t height() const { return m_height; } @@ -130,6 +141,8 @@ namespace LibGUI , m_height(height) { } + bool clamp_to_framebuffer(int32_t& x, int32_t& y, uint32_t& width, uint32_t& height) const; + private: int m_server_fd; uint32_t* m_framebuffer;