QML - GridLayout - ROW and COLUMN Span - Understanding
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I'm trying to learn QML and at this moment I'm having some problems with understanding of rowSpan and columnSpan, so sorry if this question may sound stupid for some of you.
WHAT I LEARNED:
Correct me if I'm wrong but in a GridLayout should be like this:
- Layout.row - indicates the line where the object is located;
- Layout.column - indicates the column in which the object is located;
- Layout.rowSpan - indicates how many lines should be stretched object;
- Layout.columnSpan - indicates how many columns should be stretched
object;
WHAT I'M TRYING TO DO:
Well, in this case, I'm trying to recreate this layout over here
This layout, in theory, should have the followings:
- The actual GridLayout should be composed out of 24 columns and 9 rows
- RED shape should be at -> col 0, row 1 -> colSpan 3, rowSpan 7
- BLUE shape should be at -> col 3, row 1 -> colSpan 8, rowSpan 1
- PURPLE shape should be at -> col 3, row 4 -> colSpan 6, rowSpan 3
Or at least that's what I've understood so far.
THE PROBLEM:
After I've coded the QML with the col, row accordantly, and also colSpan and rowSpan I've obtained this instead.
MY CODE:
import QtQuick 2.5 import QtQuick.Controls 1.4 import QtQuick.Layouts 1.1 Item { width: 1366 height: 512 GridLayout { id: grid columns: 24 rows: 9 anchors.fill: parent Rectangle { property var rowSpan: 7 property var columSpan: 3 Layout.column: 0 Layout.row: 1 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "red" } Rectangle { property var rowSpan: 1 property var columSpan: 8 Layout.column: 3 Layout.row: 1 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "blue" } Rectangle { property var rowSpan: 3 property var columSpan: 6 Layout.column: 4 Layout.row: 3 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "purple" } } }
Could anyone explain to me what I'm doing wrong or which part of GridLayout I didn't get it right?
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I think its doing some autolayout on top of the row and column specifier. I don't quite understand why they even offer the ability to specify row and column as it does not work as I would expect.
import QtQuick 2.12 import QtQuick.Window 2.12 import QtQuick.Controls 1.5 import QtQuick.Layouts 1.12 Window { visible: true width: 1366 height: 512 title: qsTr("Grid Spans") Item { width: 1366 height: 512 GridLayout { id: grid columns: 24 rows: 9 anchors.fill: parent columnSpacing: 0 rowSpacing: 0 onWidthChanged: { console.log(grid.width, grid.height) } Rectangle { property var rowSpan: 1 //7 property var columSpan: 1 //3 //Layout.column: 0 //Layout.row: 1 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "red" } Rectangle { property var rowSpan: 1 //1 property var columSpan: 1 //8 //Layout.column: 3 //Layout.row: 1 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "blue" } Rectangle { property var rowSpan: 1 //3 property var columSpan: 1 //6 //Layout.column: 4 //Layout.row: 3 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "purple" } } GridLayout { id: gridlines columns: 24 rows: 9 anchors.fill: parent columnSpacing: 0 rowSpacing: 0 Repeater { model: gridlines.columns*gridlines.rows delegate: transrects } Component { id: transrects Rectangle { width: gridlines.width/gridlines.columns height: gridlines.height/gridlines.rows color: "transparent" border.width: 1 border.color: "grey" opacity: 0.5 } } } } }Edit:
import QtQuick 2.12 import QtQuick.Window 2.12 import QtQuick.Controls 1.5 import QtQuick.Layouts 1.12 Window { visible: true width: 1366 height: 512 title: qsTr("Grid Spans") Item { width: 1366 height: 512 GridLayout { id: grid columns: 24 rows: 9 anchors.fill: parent columnSpacing: 0 rowSpacing: 0 onWidthChanged: { console.log(grid.width, grid.height) } Rectangle { property var rowSpan: 1 //7 property var columSpan: 1 //3 Layout.column: 0 Layout.row: 1 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "red" } Rectangle { property var rowSpan: 1 //1 property var columSpan: 1 //8 Layout.column: 3 Layout.row: 1 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "blue" } Rectangle { property var rowSpan: 1 //3 property var columSpan: 1 //6 Layout.column: 4 Layout.row: 3 Layout.preferredWidth: (parent.width / parent.columns) * columSpan Layout.preferredHeight: (parent.height / parent.rows) * rowSpan Layout.columnSpan: columSpan Layout.rowSpan: rowSpan color: "purple" } } GridLayout { id: gridlines columns: 24 rows: 9 anchors.fill: parent columnSpacing: 0 rowSpacing: 0 Repeater { model: gridlines.columns*gridlines.rows delegate: transrects } Component { id: transrects Rectangle { width: gridlines.width/gridlines.columns height: gridlines.height/gridlines.rows color: "transparent" border.width: 1 border.color: "grey" opacity: 0.5 } } } } }
