329 lines
8.6 KiB
C
329 lines
8.6 KiB
C
#include "Dengine/UserInterface.h"
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#include "Dengine/AssetManager.h"
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#include "Dengine/Assets.h"
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#include "Dengine/Renderer.h"
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#include "Dengine/Debug.h"
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i32 userInterface_button(UiState *const uiState,
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MemoryArena *const arena,
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AssetManager *const assetManager,
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Renderer *const renderer,
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Font *const font,
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const KeyInput input,
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const i32 id, const Rect rect, const char *const label)
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{
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if (math_pointInRect(rect, input.mouseP))
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{
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uiState->hotItem = id;
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if (uiState->activeItem == 0 && input.keys[keycode_mouseLeft].endedDown)
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uiState->activeItem = id;
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}
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RenderTex renderTex = renderer_createNullRenderTex(assetManager);
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/* If no widget has keyboard focus, take it */
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if (uiState->kbdItem == 0)
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uiState->kbdItem = id;
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/* If we have keyboard focus, show it */
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if (uiState->kbdItem == id)
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{
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// Draw outline
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renderer_staticRect(renderer, v2_add(V2(-6, -6), rect.pos),
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v2_add(V2(20, 20), rect.size), V2(0, 0), 0, renderTex,
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V4(1.0f, 0, 0, 1));
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}
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// Draw shadow
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renderer_staticRect(renderer, v2_add(V2(8, 8), rect.pos), rect.size,
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V2(0, 0), 0, renderTex, V4(0, 0, 0, 1));
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v2 buttonOffset = V2(0, 0);
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if (uiState->hotItem == id)
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{
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if (uiState->activeItem == id)
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{
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buttonOffset = V2(2, 2);
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renderer_staticRect(renderer, v2_add(buttonOffset, rect.pos),
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rect.size, V2(0, 0), 0, renderTex,
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V4(1, 1, 1, 1));
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}
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else
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{
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renderer_staticRect(renderer, v2_add(buttonOffset, rect.pos),
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rect.size, V2(0, 0), 0, renderTex,
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V4(1, 1, 1, 1));
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}
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}
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else
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{
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renderer_staticRect(renderer, v2_add(buttonOffset, rect.pos), rect.size,
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V2(0, 0), 0, renderTex, V4(0.5f, 0.5f, 0.5f, 1));
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}
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if (label)
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{
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v2 labelDim = asset_stringDimInPixels(font, label);
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v2 labelPos = rect.pos;
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if (labelDim.w < rect.size.w)
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{
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// Initially position the label to half the width of the button
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labelPos.x += (rect.size.w * 0.5f);
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// Move the label pos back half the length of the string (i.e.
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// center it)
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labelPos.x -= (CAST(f32)labelDim.w * 0.5f);
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}
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if (labelDim.h < rect.size.h)
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{
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labelPos.y += (rect.size.h * 0.5f);
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labelPos.y -= (CAST(f32)labelDim.h * 0.5f);
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}
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labelPos = v2_add(labelPos, buttonOffset);
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renderer_staticString(renderer, arena, font, label, labelPos, V2(0, 0),
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0, V4(0, 0, 0, 1));
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}
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// After renderering before click check, see if we need to process keys
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if (uiState->kbdItem == id)
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{
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switch (uiState->keyEntered)
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{
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case keycode_tab:
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// Set focus to nothing and let next widget get focus
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uiState->kbdItem = 0;
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if (uiState->keyMod == keycode_leftShift)
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uiState->kbdItem = uiState->lastWidget;
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// Clear key state so next widget doesn't auto grab
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uiState->keyEntered = keycode_null;
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break;
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case keycode_enter:
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return 1;
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default:
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break;
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}
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}
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uiState->lastWidget = id;
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if (!input.keys[keycode_mouseLeft].endedDown &&
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uiState->hotItem == id &&
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uiState->activeItem == id)
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{
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return 1;
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}
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return 0;
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}
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i32 userInterface_scrollBar(UiState *const uiState,
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AssetManager *const assetManager,
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Renderer *const renderer, const KeyInput input,
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const i32 id, const Rect scrollBarRect,
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i32 *const value, const i32 maxValue)
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{
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#ifdef DENGINE_DEBUG
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ASSERT(*value <= maxValue);
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#endif
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if (math_pointInRect(scrollBarRect, input.mouseP))
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{
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uiState->hotItem = id;
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if (uiState->activeItem == 0 && input.keys[keycode_mouseLeft].endedDown)
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uiState->activeItem = id;
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}
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RenderTex renderTex = renderer_createNullRenderTex(assetManager);
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/* If no widget has keyboard focus, take it */
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if (uiState->kbdItem == 0)
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uiState->kbdItem = id;
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/* If we have keyboard focus, show it */
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if (uiState->kbdItem == id)
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{
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// Draw outline
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renderer_staticRect(renderer, v2_add(V2(-6, -6), scrollBarRect.pos),
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v2_add(V2(20, 20), scrollBarRect.size), V2(0, 0), 0,
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renderTex, V4(1.0f, 0, 0, 1));
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}
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// Render scroll bar background
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renderer_staticRect(renderer, scrollBarRect.pos, scrollBarRect.size,
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V2(0, 0), 0, renderTex, V4(0.75f, 0.5f, 0.5f, 1));
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// Render scroll bar slider
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v2 sliderSize = V2(16, 16);
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v4 sliderColor = V4(0, 0, 0, 1);
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f32 sliderPercentageOffset = (CAST(f32) *value / CAST(f32) maxValue);
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f32 sliderYOffsetToBar =
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(scrollBarRect.size.h - sliderSize.h) * sliderPercentageOffset;
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v2 sliderPos = v2_add(scrollBarRect.pos, V2(0, sliderYOffsetToBar));
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if (uiState->hotItem == id || uiState->activeItem == id)
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sliderColor = V4(1.0f, 0, 0, 1);
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else
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sliderColor = V4(0.0f, 1.0f, 0, 1);
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renderer_staticRect(renderer, sliderPos, sliderSize, V2(0, 0), 0, renderTex,
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sliderColor);
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if (uiState->kbdItem == id)
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{
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switch (uiState->keyEntered)
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{
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case keycode_tab:
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uiState->kbdItem = 0;
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if (uiState->keyMod == keycode_leftShift)
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uiState->kbdItem = uiState->lastWidget;
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// Clear key state so next widget doesn't auto grab
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uiState->keyEntered = keycode_null;
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break;
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case keycode_up:
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// TODO(doyle): Fix input for this to work, i.e. proper rate limited input poll
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if (*value < maxValue)
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{
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(*value)++;
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return 1;
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}
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case keycode_down:
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if (*value > 0)
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{
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(*value)--;
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return 1;
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}
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default:
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break;
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}
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}
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uiState->lastWidget = id;
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if (uiState->activeItem == id)
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{
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f32 mouseYRelToRect = input.mouseP.y - scrollBarRect.pos.y;
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// Bounds check
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if (mouseYRelToRect < 0)
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mouseYRelToRect = 0;
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else if (mouseYRelToRect > scrollBarRect.size.h)
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mouseYRelToRect = scrollBarRect.size.h;
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f32 newSliderPercentOffset =
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(CAST(f32) mouseYRelToRect / scrollBarRect.size.h);
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i32 newValue = CAST(i32)(newSliderPercentOffset * CAST(f32)maxValue);
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if (newValue != *value)
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{
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*value = newValue;
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return 1;
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}
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}
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return 0;
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}
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i32 userInterface_textField(UiState *const uiState, MemoryArena *const arena,
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AssetManager *const assetManager,
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Renderer *const renderer, Font *const font,
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KeyInput input, const i32 id, v2 pos,
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char *const string)
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{
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i32 strLen = common_strlen(string);
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b32 changed = FALSE;
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Rect textRect = {0};
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textRect.pos = pos;
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textRect.size = V2(30 * font->maxSize.w, font->maxSize.h);
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if (math_pointInRect(textRect, input.mouseP))
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{
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uiState->hotItem = id;
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if (uiState->activeItem == 0 && input.keys[keycode_mouseLeft].endedDown)
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{
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uiState->activeItem = id;
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}
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}
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/* If no widget has keyboard focus, take it */
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if (uiState->kbdItem == 0)
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uiState->kbdItem = id;
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RenderTex renderTex = renderer_createNullRenderTex(assetManager);
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/* If we have keyboard focus, show it */
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if (uiState->kbdItem == id)
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{
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// Draw outline
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renderer_staticRect(renderer, v2_add(V2(-4, -4), textRect.pos),
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v2_add(V2(16, 16), textRect.size), V2(0, 0), 0,
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renderTex, V4(1.0f, 0, 0, 1));
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}
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// Render text field
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renderer_staticRect(renderer, textRect.pos, textRect.size, V2(0, 0), 0,
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renderTex, V4(0.75f, 0.5f, 0.5f, 1));
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if (uiState->activeItem == id || uiState->hotItem == id)
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{
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renderer_staticRect(renderer, textRect.pos, textRect.size, V2(0, 0), 0,
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renderTex, V4(0.75f, 0.75f, 0.0f, 1));
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}
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else
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{
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renderer_staticRect(renderer, textRect.pos, textRect.size, V2(0, 0), 0,
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renderTex, V4(0.5f, 0.5f, 0.5f, 1));
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}
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v2 strPos = textRect.pos;
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renderer_staticString(renderer, arena, font, string, strPos, V2(0, 0), 0,
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V4(0, 0, 0, 1));
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if (uiState->kbdItem == id)
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{
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switch (uiState->keyEntered)
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{
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case keycode_tab:
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uiState->kbdItem = 0;
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if (uiState->keyMod == keycode_leftShift)
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uiState->kbdItem = uiState->lastWidget;
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uiState->keyEntered = keycode_null;
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break;
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case keycode_backspace:
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if (strLen > 0)
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{
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string[--strLen] = 0;
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changed = TRUE;
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}
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break;
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default:
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break;
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}
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if (uiState->keyChar >= keycode_space &&
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uiState->keyChar <= keycode_tilda && strLen < 30)
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{
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string[strLen++] = uiState->keyChar + ' ';
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string[strLen] = 0;
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changed = TRUE;
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}
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}
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if (!input.keys[keycode_mouseLeft].endedDown &&
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uiState->hotItem == id &&
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uiState->activeItem == id)
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{
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uiState->kbdItem = id;
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}
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uiState->lastWidget = id;
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return changed;
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}
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