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Fennec/NativeUI/Viewport: Difference between revisions
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* If the viewport size changes, Java must first send a resize notification. browser.js must, upon processing the resize, synchronously notify Java of receiving this event, along with any updated properties (offset, zoom, page size). While processing this event (still on the gecko thread), Java may recalculate properties (offset, zoom, display port margins) and must queue an event back on the gecko thread with the new properties. Drawing must be suppressed between the handling of the initial resize notification and handling of the final property update event. | * If the viewport size changes, Java must first send a resize notification. browser.js must, upon processing the resize, synchronously notify Java of receiving this event, along with any updated properties (offset, zoom, page size). While processing this event (still on the gecko thread), Java may recalculate properties (offset, zoom, display port margins) and must queue an event back on the gecko thread with the new properties. Drawing must be suppressed between the handling of the initial resize notification and handling of the final property update event. | ||
== Implementation | == Implementation Assertions == | ||
* The firstPaint flag on the presShell is set by browser.js if and only if the next draw will be of a different document than the previous draw was. | * The firstPaint flag on the presShell is set by browser.js if and only if the next draw will be of a different document than the previous draw was. It is cleared as close to the composition of that draw as possible. | ||