Fixed some issue related to rendering and space management

demos/xychart.html

@@ -20,8 +20,8 @@
     title Basic xychart
     x-axis "this is x axis" [category1, "category 2", category3, category4]
     y-axis yaxisText 10 --> 150
-    line [23, 46, 75, 43]
     bar "sample bat" [52, 96, 35, 10]
+    line [23, 46, 75, 43]
     </pre>
 
     <hr />
@@ -32,11 +32,22 @@
     title Basic xychart
     x-axis "this is x axis" [category1, "category 2", category3, category4]
     y-axis yaxisText 10 --> 150
-    line [23, 46, 75, 43]
     bar "sample bat" [52, 96, 35, 10]
+    line [23, 46, 75, 43]
     </pre>
 
     <hr />
+    <h1>XY Charts demos</h1>
+    <pre class="mermaid">
+    xychart-beta horizontal
+    title Basic xychart
+    x-axis "this is x axis" [category1, "category 2", category3, category4]
+    y-axis yaxisText 10 --> 150
+    line [23, 46, 75, 43]
+    </pre>
+
+    <hr />
+
     <script type="module">
       import mermaid from './mermaid.esm.mjs';
       mermaid.initialize({

packages/mermaid/src/diagrams/xychart/chartBuilder/Interfaces.ts

@@ -26,6 +26,10 @@ export interface BarPlotData {
 
 export type PlotData = LinePlotData | BarPlotData;
 
+export function isBarPlot(data: PlotData): data is BarPlotData {
+  return data.type === ChartPlotEnum.BAR;
+}
+
 export interface BandAxisDataType {
   title: string;
   categories: string[];

packages/mermaid/src/diagrams/xychart/chartBuilder/Orchestrator.ts

@@ -1,5 +1,5 @@
 import { log } from '../../../logger.js';
-import { DrawableElem, XYChartData } from './Interfaces.js';
+import { DrawableElem, XYChartData, isBarPlot } from './Interfaces.js';
 import { getChartTitleComponent } from './components/ChartTitle.js';
 import { ChartComponent } from './Interfaces.js';
 import { IAxis, getAxis } from './components/axis/index.js';
@@ -13,7 +13,7 @@ export class Orchestrator {
     xAxis: IAxis;
     yAxis: IAxis;
   };
-  constructor(private chartConfig: XYChartConfig, chartData: XYChartData) {
+  constructor(private chartConfig: XYChartConfig, private chartData: XYChartData) {
     this.componentStore = {
       title: getChartTitleComponent(chartConfig, chartData),
       plot: getPlotComponent(chartConfig, chartData),
@@ -87,6 +87,9 @@ export class Orchestrator {
     this.componentStore.xAxis.setBoundingBoxXY({ x: chartX, y: chartY + chartHeight });
     this.componentStore.yAxis.setRange([chartY, chartY + chartHeight]);
     this.componentStore.yAxis.setBoundingBoxXY({ x: 0, y: chartY });
+    if(this.chartData.plots.find(p => isBarPlot(p))) {
+      this.componentStore.xAxis.recalculateOuterPaddingToDrawBar();
+    }
   }
 
   private calculateHorizonatalSpace() {
@@ -156,6 +159,9 @@ export class Orchestrator {
     this.componentStore.yAxis.setBoundingBoxXY({ x: chartX, y: titleYEnd });
     this.componentStore.xAxis.setRange([chartY, chartY + chartHeight]);
     this.componentStore.xAxis.setBoundingBoxXY({ x: 0, y: chartY });
+    if(this.chartData.plots.find(p => isBarPlot(p))) {
+      this.componentStore.xAxis.recalculateOuterPaddingToDrawBar();
+    }
   }
 
   private calculateSpace() {

packages/mermaid/src/diagrams/xychart/chartBuilder/components/axis/BandAxis.ts

@@ -1,15 +1,15 @@
 import { ScaleBand, scaleBand } from 'd3';
-import { AxisConfig } from '../../Interfaces.js';
+import { XYChartAxisConfig } from '../../../../../config.type.js';
+import { log } from '../../../../../logger.js';
 import { ITextDimensionCalculator } from '../../TextDimensionCalculator.js';
 import { BaseAxis } from './BaseAxis.js';
-import { log } from '../../../../../logger.js';
 
 export class BandAxis extends BaseAxis {
   private scale: ScaleBand<string>;
   private categories: string[];
 
   constructor(
-    axisConfig: AxisConfig,
+    axisConfig: XYChartAxisConfig,
     categories: string[],
     title: string,
     textDimensionCalculator: ITextDimensionCalculator

packages/mermaid/src/diagrams/xychart/chartBuilder/components/axis/BaseAxis.ts

@@ -1,7 +1,8 @@
-import { Dimension, Point, DrawableElem, BoundingRect, AxisConfig } from '../../Interfaces.js';
-import { AxisPosition, IAxis } from './index.js';
-import { ITextDimensionCalculator } from '../../TextDimensionCalculator.js';
+import { XYChartAxisConfig } from '../../../../../config.type.js';
 import { log } from '../../../../../logger.js';
+import { BoundingRect, Dimension, DrawableElem, Point } from '../../Interfaces.js';
+import { ITextDimensionCalculator } from '../../TextDimensionCalculator.js';
+import { AxisPosition, IAxis } from './index.js';
 
 export abstract class BaseAxis implements IAxis {
   protected boundingRect: BoundingRect = { x: 0, y: 0, width: 0, height: 0 };
@@ -10,10 +11,10 @@ export abstract class BaseAxis implements IAxis {
   protected showTitle = false;
   protected showLabel = false;
   protected showTick = false;
-  protected innerPadding = 0;
+  protected outerPadding = 0;
 
   constructor(
-    protected axisConfig: AxisConfig,
+    protected axisConfig: XYChartAxisConfig,
     protected title: string,
     protected textDimensionCalculator: ITextDimensionCalculator
   ) {
@@ -28,7 +29,7 @@ export abstract class BaseAxis implements IAxis {
   }
 
   getRange(): [number, number] {
-    return [this.range[0] + this.innerPadding, this.range[1] - this.innerPadding];
+    return [this.range[0] + this.outerPadding, this.range[1] - this.outerPadding];
   }
 
   setAxisPosition(axisPosition: AxisPosition): void {
@@ -45,9 +46,8 @@ export abstract class BaseAxis implements IAxis {
     return Math.abs(this.range[0] - this.range[1]) / this.getTickValues().length;
   }
 
-  getTickInnerPadding(): number {
-    return this.innerPadding * 2;
-    // return Math.abs(this.range[0] - this.range[1]) / this.getTickValues().length;
+  getAxisOuterPadding(): number {
+    return this.outerPadding;
   }
 
   private getLabelDimension(): Dimension {
@@ -57,11 +57,18 @@ export abstract class BaseAxis implements IAxis {
     );
   }
 
+  recalculateOuterPaddingToDrawBar(): void {
+    if((0.7 * this.getTickDistance()) > (this.outerPadding * 2) ) {
+      this.outerPadding = Math.floor((0.7 * this.getTickDistance())/2);
+    }
+    this.recalculateScale();
+  }
+
   private calculateSpaceIfDrawnHorizontally(availableSpace: Dimension) {
     let availableHeight = availableSpace.height;
     if (this.axisConfig.showLabel) {
       const spaceRequired = this.getLabelDimension();
-      this.innerPadding = spaceRequired.width / 2;
+      this.outerPadding = spaceRequired.width / 2;
       const heightRequired = spaceRequired.height + this.axisConfig.lablePadding * 2;
       log.trace('height required for axis label: ', heightRequired);
       if (heightRequired <= availableHeight) {
@@ -93,7 +100,7 @@ export abstract class BaseAxis implements IAxis {
     let availableWidth = availableSpace.width;
     if (this.axisConfig.showLabel) {
       const spaceRequired = this.getLabelDimension();
-      this.innerPadding = spaceRequired.height / 2;
+      this.outerPadding = spaceRequired.height / 2;
       const widthRequired = spaceRequired.width + this.axisConfig.lablePadding * 2;
       log.trace('width required for axis label: ', widthRequired);
       if (widthRequired <= availableWidth) {

packages/mermaid/src/diagrams/xychart/chartBuilder/components/axis/LinearAxis.ts

@@ -1,6 +1,6 @@
 import { ScaleLinear, scaleLinear } from 'd3';
+import { XYChartAxisConfig } from '../../../../../config.type.js';
 import { log } from '../../../../../logger.js';
-import { AxisConfig } from '../../Interfaces.js';
 import { ITextDimensionCalculator } from '../../TextDimensionCalculator.js';
 import { BaseAxis } from './BaseAxis.js';
 
@@ -9,7 +9,7 @@ export class LinearAxis extends BaseAxis {
   private domain: [number, number];
 
   constructor(
-    axisConfig: AxisConfig,
+    axisConfig: XYChartAxisConfig,
     domain: [number, number],
     title: string,
     textDimensionCalculator: ITextDimensionCalculator

packages/mermaid/src/diagrams/xychart/chartBuilder/components/axis/index.ts

@@ -13,8 +13,9 @@ export type AxisPosition = 'left' | 'right' | 'top' | 'bottom';
 export interface IAxis extends ChartComponent {
   getScaleValue(value: string | number): number;
   setAxisPosition(axisPosition: AxisPosition): void;
-  getTickInnerPadding(): number;
+  getAxisOuterPadding(): number;
   getTickDistance(): number;
+  recalculateOuterPaddingToDrawBar(): void;
   setRange(range: [number, number]): void;
 }
 

packages/mermaid/src/diagrams/xychart/chartBuilder/components/plot/BarPlot.ts

@@ -24,7 +24,7 @@ export class BarPlot {
     const barPaddingPercent = 5;
 
     const barWidth =
-      Math.min(this.xAxis.getTickInnerPadding(), this.xAxis.getTickDistance()) *
+      Math.min(this.xAxis.getAxisOuterPadding() * 2, this.xAxis.getTickDistance()) *
       (1 - barPaddingPercent / 100);
     const barWidthHalf = barWidth / 2;
 

packages/mermaid/src/diagrams/xychart/xychartDb.ts

@@ -125,8 +125,9 @@ function setYAxisRangeData(min: number, max: number) {
 function setLineData(title: string, data: number[]) {
   if (isBandAxisData(xyChartData.xAxis)) {
     xyChartData.plots.push({
-      type: ChartPlotEnum.BAR,
-      fill: '#0000bb',
+      type: ChartPlotEnum.LINE,
+      strokeFill: '#00ff00',
+      strokeWidth: 2,
       data: xyChartData.xAxis.categories.map((c, i) => [c, data[i]]),
     });
   }
@@ -134,9 +135,8 @@ function setLineData(title: string, data: number[]) {
 function setBarData(title: string, data: number[]) {
   if (isBandAxisData(xyChartData.xAxis)) {
     xyChartData.plots.push({
-      type: ChartPlotEnum.LINE,
-      strokeFill: '#00ff00',
-      strokeWidth: 2,
+      type: ChartPlotEnum.BAR,
+      fill: '#0000bb',
       data: xyChartData.xAxis.categories.map((c, i) => [c, data[i]]),
     });
   }