QT Quick 中QML Map 类型实现离线地图软件开发？

qiujdz 2017-03-06 04:13:57

看QT的官方资料上写QML Map类型是支持离线地图的，但是没有找到对应的接口方法，有没有大神了解的，帮忙指点。

这里有一段官网对离线地图的描述，在MAP QML TYPE标签页面下：For "offline" plugins, the time spent retrieving the stored geographic data and rendering the basic map features can often play a dominant role.

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星云智能 2020-05-15

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写了一个稍微通用的地图插件，供大家参考：https://blog.csdn.net/xjf_whut/article/details/105842952。

qiujdz 2017-03-13

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感谢楼上给的思路，github里面名字叫qgroundcontrol的有不少。能否帮忙发个链接

浮光掠影001 2017-03-07

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自己写plugin，重载官方的GEO相关的代码；可以参看github中qgroundcontrol中地图的实现；离线地图主要采用的瓦片技术；

Building on: linux-g++ (x86_64, CPU features: mmx sse sse2) Building for: linux-aarch64-gnu-g++ (arm64, CPU features: neon) Target compiler: gcc 6.3.1 Configuration: cross_compile use_gold_linker compile_examples enable_new_dtags largefile neon precompile_header shared rpath release c++11 c++14 concurrent dbus reduce_exports stl Build options: Mode ................................... release Optimize release build for size ........ no Building shared libraries .............. yes Using C standard ....................... C11 Using C++ standard ..................... C++14 Using ccache ........................... no Using gold linker ...................... yes Using new DTAGS ........................ yes Using precompiled headers .............. yes Using LTCG ............................. no Target compiler supports: NEON ................................. yes Build parts ............................ libs Qt modules and options: Qt Concurrent .......................... yes Qt D-Bus ............................... yes Qt D-Bus directly linked to libdbus .... no Qt Gui ................................. yes Qt Network ............................. yes Qt Sql ................................. yes Qt Testlib ............................. yes Qt Widgets ............................. yes Qt Xml ................................. yes Support enabled for: Using pkg-config ....................... yes udev ................................... no Using system zlib ...................... yes Qt Core: DoubleConversion ....................... yes Using system DoubleConversion ........ no GLib ................................... no iconv .................................. yes ICU .................................... no Tracing backend ........................ Logging backends: journald ............................. no syslog ............................... no slog2 ................................ no Using system PCRE2 ..................... no Qt Network: getifaddrs() ........................... yes IPv6 ifname ............................ yes libproxy ............................... no Linux AF_NETLINK ....................... yes OpenSSL ................................ yes Qt directly linked to OpenSSL ........ no OpenSSL 1.1 ............................ no DTLS ................................... yes SCTP ................................... no Use system proxies ..................... yes Qt Gui: Accessibility .......................... yes FreeType ............................... yes Using system FreeType ................ no HarfBuzz ............................... yes Using system HarfBuzz ................ no Fontconfig ............................. no Image formats: GIF .................................. yes ICO .................................. yes JPEG ................................. yes Using system libjpeg ............... yes PNG .................................. yes Using system libpng ................ no EGL .................................... no OpenVG ................................. no OpenGL: Desktop OpenGL ....................... no OpenGL ES 2.0 ........................ no OpenGL ES 3.0 ........................ no OpenGL ES 3.1 ........................ no OpenGL ES 3.2 ........................ no Vulkan ................................. no Session Management ..................... yes Features used by QPA backends: evdev .................................. yes libinput ............................... no INTEGRITY HID .......................... no mtdev .................................. no tslib .................................. no xkbcommon .............................. no X11 specific: XLib ................................. no EGL on X11 ........................... no QPA backends: DirectFB ............................... no EGLFS .................................. no LinuxFB ................................ yes VNC .................................... yes Mir client ............................. no Qt Sql: SQL item models ........................ yes Qt Widgets: GTK+ ................................... no Styles ................................. Fusion Windows Qt PrintSupport: CUPS ................................... no Qt Sql Drivers: DB2 (IBM) .............................. no InterBase .............................. no MySql .................................. no OCI (Oracle) ........................... no ODBC ................................... no PostgreSQL ............................. no SQLite2 ................................ no SQLite ................................. yes Using system provided SQLite ......... no TDS (Sybase) ........................... no Qt Testlib: Tester for item models ................. yes Qt SerialBus: Socket CAN ............................. yes Socket CAN FD .......................... yes Qt QML: QML network support .................... yes QML debugging and profiling support .... yes QML sequence object .................... yes QML list model ......................... yes QML XML http request ................... yes QML Locale ............................. yes QML delegate model ..................... yes Qt Quick: Direct3D 12 ............................ no AnimatedImage item ..................... yes Canvas item ............................ yes Support for Qt Quick Designer .......... yes Flipable item .......................... yes GridView item .......................... yes ListView item .......................... yes TableView item ......................... yes Path support ........................... yes PathView item .......................... yes Positioner items ....................... yes Repeater item .......................... yes ShaderEffect item ...................... yes Sprite item ............................ yes Qt Scxml: ECMAScript data model for QtScxml ...... yes Qt Gamepad: SDL2 ................................... no Qt 3D: Assimp ................................. yes System Assimp .......................... no Output Qt3D Job traces ................. no Output Qt3D GL traces .................. no Use SSE2 instructions .................. no Use AVX2 instructions .................. no Aspects: Render aspect ........................ yes Input aspect ......................... yes Logic aspect ......................... yes Animation aspect ..................... yes Extras aspect ........................ yes Qt 3D Renderers: OpenGL Renderer ........................ yes Qt 3D GeometryLoaders: Autodesk FBX ........................... no Qt Wayland Client ........................ no Qt Wayland Compositor .................... no Qt Bluetooth: BlueZ .................................. no BlueZ Low Energy ....................... no Linux Crypto API ....................... no WinRT Bluetooth API (desktop & UWP) .... no Qt Sensors: sensorfw ............................... no Qt Quick Controls 2: Styles ................................. Default Fusion Imagine Material Universal Qt Quick Templates 2: Hover support .......................... yes Multi-touch support .................... yes Qt Positioning: Gypsy GPS Daemon ....................... no WinRT Geolocation API .................. no Qt Location: Qt.labs.location experimental QML plugin . yes Geoservice plugins: OpenStreetMap ........................ yes HERE ................................. yes Esri ................................. yes Mapbox ............................... yes MapboxGL ............................. no Itemsoverlay ......................... yes QtXmlPatterns: XML schema support ..................... yes Qt Multimedia: ALSA ................................... no GStreamer 1.0 .......................... no GStreamer 0.10 ......................... no Video for Linux ........................ yes OpenAL ................................. no PulseAudio ............................. no Resource Policy (libresourceqt5) ....... no Windows Audio Services ................. no DirectShow ............................. no Windows Media Foundation ............... no Qt Tools: QDoc ................................... no Qt WebEngine: Embedded build ......................... yes Pepper Plugins ......................... no Printing and PDF ....................... no Proprietary Codecs ..................... no Spellchecker ........................... yes Native Spellchecker .................... no WebRTC ................................. no Use System Ninja ....................... no Geolocation ............................ yes WebChannel support ..................... yes Use v8 snapshot ........................ yes Kerberos Authentication ................ no Building v8 snapshot supported ......... yes Use ALSA ............................... no Use PulseAudio ......................... no Optional system libraries used: re2 .................................. no icu .................................. no libwebp, libwebpmux and libwebpdemux . no opus ................................. no ffmpeg ............................... no libvpx ............................... no snappy ............................... no glib ................................. no zlib ................................. yes minizip .............................. no libevent ............................. no jsoncpp .............................. no protobuf ............................. no libxml2 and libxslt .................. no lcms2 ................................ no png .................................. no JPEG ................................. no harfbuzz ............................. no freetype ............................. no x11 .................................. no Required system libraries: fontconfig ........................... no dbus ................................. no nss .................................. no khr .................................. no glibc ................................ yes Required system libraries for qpa-xcb: libdrm ............................... no xcomposite ........................... no xcursor .............................. no xi ................................... no xrandr ............................... no xtst ................................. no Note: Also available for Linux: linux-clang linux-icc

[QtQuick]实现离线地图 Qt版本：5.12.8 1 需求分析使用Qt实现离线地图，大多数软件是通过GraphicsView框架，结合瓦片地图相关算法来实现的。但这些绝大多数都不太讨喜。从项目时间、成本和质量的角度考虑，我们需要一个开发周期短、人力成本低、软件质量有保障的方案。自QtLocation 5.0开始，Qt推出了Map QML Type，这意味着我们可以使用Qt自带的地图，而不用自己再去实现非常底层的算法了。 The Map type is used to display a ma

qt quick-qml高德地图实现V1版本(跨平台支持、无需浏览器内核，运行迅速，下个版本实现位置搜索)

总结起来，通过使用Qt Quick和QML，我们可以轻松地在应用程序中集成高德地图。通过运行这个示例代码，我们可以在Qt Quick应用程序中看到一个显示高德地图的窗口。这只是一个简单的示例，你可以进一步探索Qt Location模块的功能，例如标记点、路径规划等，以实现更丰富的地图体验。我们指定了高德地图的插件名称为"mapboxgl"，这是高德地图在Qt Location中注册的插件名称。在这个示例中，我们首先导入了所需的Qt Quick和Qt Location模块。的根元素，用于包含地图对象。

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