TPDFlibFormInputEvent
Forms, interaction, data types
Description
Describes pointer, wheel, keyboard and composed-text input without depending on VCL, FMX, LCL, Win32 messages or another host toolkit
Only fields relevant to Kind are read by DispatchInputEvent
Declaration
type
TPDFlibFormInputEventKind = (fiekPointerMove,
fiekPointerDown, fiekPointerUp, fiekPointerDoubleClick,
fiekPointerLeave, fiekPointerCancel, fiekWheel,
fiekKeyDown, fiekKeyUp, fiekTextInput);
TPDFlibFormInputModifier = (fimShift, fimControl,
fimAlt, fimMeta);
TPDFlibFormInputModifiers = set of TPDFlibFormInputModifier;
TPDFlibFormInputButton = (fibNone, fibPrimary,
fibSecondary, fibMiddle, fibX1, fibX2);
TPDFlibFormInputKey = (fikNone, fikBackspace, fikTab,
fikEnter, fikEscape, fikSpace, fikPageUp, fikPageDown,
fikEnd, fikHome, fikLeft, fikUp, fikRight, fikDown,
fikInsert, fikDelete, fikA, fikY, fikZ);
TPDFlibFormInputEvent = record
Kind: TPDFlibFormInputEventKind;
Modifiers: TPDFlibFormInputModifiers;
Button: TPDFlibFormInputButton;
Key: TPDFlibFormInputKey;
Page: Integer;
X: Double;
Y: Double;
WheelDeltaX: Double;
WheelDeltaY: Double;
Text: WideString;
end;Fields
| Kind | Selects the event and determines which remaining fields are consumed |
|---|---|
| Modifiers | Active Shift, Control, Alt and platform Meta modifiers |
| Button | Pointer button for down and up events; PDF Widget activation uses fibPrimary |
| Key | Named, platform-neutral key for key-down and key-up events |
| Page | One-based PDF page containing the pointer position |
| X, Y | Finite pointer position in rotated visual CropBox coordinates |
| WheelDeltaX, WheelDeltaY | Normalized logical wheel steps, independent of a platform's native wheel constant |
| Text | Composed UTF-16 text supplied by fiekTextInput |
See also
DispatchInputEvent, TPDFlibFormInputResult, TPDFlibFormSession