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101 lines
4.4 KiB
Markdown
101 lines
4.4 KiB
Markdown
# Classes and structures
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#### class Animation: [header](/src/common/animation.h) [source](/src/common/animation.cpp)
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Animation helper class with two easing-in animations: linear and exponential.
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#### class AsyncMessageQueue: [header](/src/common/async_message_queue.h)
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Header-only asynchronous message queue. Used by `TwoWayPipeMessageIPC`.
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#### class TwoWayPipeMessageIPC: [header](/src/common/two_way_pipe_message_ipc.h)
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Header-only asynchronous IPC messaging class. Used by the runner to communicate with the settings window.
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#### class DPIAware: [header](/src/common/dpi_aware.h) [source](/src/common/dpi_aware.cpp)
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Helper class for creating DPI-aware applications.
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#### struct MonitorInfo: [header](/src/common/monitors.h) [source](/src/common/monitors.cpp)
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Class for obtaining information about physical displays connected to the machine.
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#### class Settings, class PowerToyValues, class CustomActionObject: [header](/src/common/settings_objects.h) [source](/src/common/settings_objects.cpp)
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Classes used to define settings screens for the PowerToys modules.
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#### class Tasklist: [header](/src/common/tasklist_positions.h) [source](/src/common/tasklist_positions.cpp)
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Class that can detect the position of the windows buttons on the taskbar. It also detects which window will react to pressing `WinKey + number`.
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#### struct WindowsColors: [header](/src/common/windows_colors.h) [source](/src/common/windows_colors.cpp)
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Class for detecting the current Windows color scheme.
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# Helpers
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#### Common helpers: [header](/src/common/common.h) [source](/src/common/common.cpp)
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Various helper functions.
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#### Settings helpers: [header](/src/common/settings_helpers.h)
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Helper methods for the settings.
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#### Start visible helper: [header](/src/common/start_visible.h) [source](/src/common/start_visible.cpp)
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Contains function to test if the Start menu is visible.
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# Toast Notifications
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#### Notifications API [header](/src/common/notifications.h) [source](/src/common/notifications.cpp)
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To use UWP-style toast notifications, simply include the header and call one of these functions:
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```cpp
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void show_toast(std::wstring_view message); // #1
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void show_toast_background_activated( // #2
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std::wstring_view message,
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std::wstring_view background_handler_id,
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std::vector<std::wstring_view> button_labels);
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```
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We might add more functions in the future if the need arises, e.g. `show_toast_xml` which will accept raw XML for rich customization.
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Description:
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- `#1` is for sending simple notifications without any callbacks or buttons
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- `#2` is capable of showing a toast with multiple buttons and background activation
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- `message` is a plain-text argument
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Implement a toast activation handler/callback as a function in [handler_functions.cpp](/src/common/notifications_winrt/handler_functions.cpp) and register its `background_handler_id` via `handlers_map`, e.g.:
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```cpp
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// Your .cpp where you'd like to show a toast
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#include <common/notifications.h>
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void some_func() {
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// ...
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notifications::show_toast_background_activated(
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L"Toast message!", // text displayed in a toast
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L"awesome_toast", // activation handler id
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{L"Press me!", L"Also could press me!", L"I'm here to be pressed!"} // buttons in a toast
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);
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```
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```cpp
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// handler_functions.cpp
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void awesome_toast_handler(IBackgroundTaskInstance, const size_t button_id)
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{
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switch(button_id)
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{
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case 0:
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// handle "Press me!" button click
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case 1:
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// handle "Also could press me!" button click
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case 2:
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// handle "I'm here to be pressed!" button click
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}
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}
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namespace
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{
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const std::unordered_map<std::wstring_view, handler_function_t> handlers_map = {
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// ...other handlers...
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{L"awesome_toast", awesome_toast_handler}
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};}
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```
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Note: since _background activation_ implies that your toast handler will be invoked in a separate process, you can't share data directly from within a handler and your PT process. Also, since PT is currently a Desktop Bridge app, _foreground activation_ is [handled the same as background](https://docs.microsoft.com/en-US/windows/uwp/design/shell/tiles-and-notifications/send-local-toast-desktop-cpp-wrl#foreground-vs-background-activation), therefore we don't make a dedicated API for it. You can read more on the rationale of the current design [here](https://github.com/microsoft/PowerToys/pull/1178#issue-368768337).
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