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Implemented variable scrolling speed for ScrollableContainer.

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This commit is contained in:
Leon Styhre 2020-10-17 12:16:58 +02:00
parent b83bacc160
commit 13e0735dda
1 changed files with 10 additions and 8 deletions
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18
es-core/src/components/ScrollableContainer.cpp
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@ -13,9 +13,10 @@
#include "renderers/Renderer.h"
#include "Window.h"
#define AUTO_SCROLL_RESET_DELAY 3000 // ms to reset to top after we reach the bottom.
#define AUTO_SCROLL_DELAY 2000 // ms to wait before we start to scroll.
#define AUTO_SCROLL_SPEED 130 // ms between scrolls.
#define AUTO_SCROLL_RESET_DELAY 6000 // Time before resetting to top after we reach the bottom.
#define AUTO_SCROLL_DELAY 2600 // Time to wait before we start to scroll.
#define AUTO_SCROLL_SPEED 30 // Relative scrolling speed (lower is faster).
#define AUTO_WIDTH_MOD 350 // Line width modifier to use to calculate scrolling speed.
ScrollableContainer::ScrollableContainer(
Window* window)
@ -87,11 +88,13 @@ void ScrollableContainer::update(int deltaTime)
return;
}
if (mAutoScrollSpeed != 0) {
mAutoScrollAccumulator += deltaTime;
const Vector2f contentSize = getContentSize();
// Scale speed by the text width, more text per line leads to slower scrolling.
const float widthMod = contentSize.x() / AUTO_WIDTH_MOD;
if (mAutoScrollSpeed != 0) {
mAutoScrollAccumulator += deltaTime / widthMod;
// Scale speed by our width! more text per line = slower scrolling.
const float widthMod = (680.0f / getSize().x());
while (mAutoScrollAccumulator >= mAutoScrollSpeed) {
mScrollPos += mScrollDir;
mAutoScrollAccumulator -= mAutoScrollSpeed;
@ -104,7 +107,6 @@ void ScrollableContainer::update(int deltaTime)
if (mScrollPos.y() < 0)
mScrollPos[1] = 0;
const Vector2f contentSize = getContentSize();
if (mScrollPos.x() + getSize().x() > contentSize.x()) {
mScrollPos[0] = contentSize.x() - getSize().x();
mAtEnd = true;