Compositore di stampe¶

Strumenti per l’esplorazione del layout di stampa¶

Per navigare nella mappa, il compositore ti offre diversi strumenti:

• ^Ingrandisci

• ^{Rimpicciolosci}

• ^{Zoom completo}

• ^{Zoom al 100%}

• ^{Aggiorna la vista}, che serve nel caso in cui la vista nel layout non rispecchi quanto presente nella vista mappa di QGIS

• ^{Sposta compositore}

• ^{Zoom alla selezione} (zoom a una specifica regione del compositore)

Puoi cambiare il livello di zoom usando la rotellina del mouse o il menu a tendina della barra di stato. Se devi cambiare alla modalità di spostamento mentre stai lavorando tieni premuta la Barra spaziatrice o premi la rotellina del mouse. Con la combinazione di tasti Ctrl+Barra spaziatrice, puoi temporaneamente cambiare alla modalità zoom alla selezione e con la combinazione Ctrl+Shift+Barra spaziatrice passi alla modalità di zoom out.

Proprietà principali¶

The Main properties dialog of the map Item Properties tab provides the following functionalities (see figure_composer_map_1):

Figure Composer Map 1:

Scheda proprietà oggetti

• L’area Anteprima ti permette di scegliere fra le modalità ‘Rettangolo’, ‘Cache’ e ‘Visualizza’ descritte sopra. Se cambi la vista della mappa in QGIS cambiando le proprietà dei vettori e dei raster, puoi aggiornare la vista del compositore selezionando l’elemento corrispondente e premendo il pulsante [Aggiorna anteprima].

• Il campo Scala ti permette di inserire una scala manuale.

• Il campo Rotazione ti permette di ruotare l’elemento della mappa in senso orario e in gradi. Puoi aggiungere la cornice delle coordinate solamente con il valore predefinito 0.

• Disegna elementi sulla mappa ti permette di visualizzare le note testuali che hai aggiunto sulla mappa di QGIS.

• You can choose to lock the layers shown on a map item. Check Lock layers for map item. After this is checked, any layer that would be displayed or hidden in the main QGIS window will not appear or be hidden in the map item of the Composer. But style and labels of a locked layer are still refreshed according to the main QGIS interface.
• The button allows you to add quickly all the presets views you have prepared in QGIS. Clicking on the button you will see the list of all the preset views: just select the preset you want to display. The map canvas will automatically lock the preset layers by enabling the Lock layers for map item: if you want to unselect the preset, just uncheck the and press on the button. See Legenda to find out how to create presets views.

Estensione mappa¶

The Extents dialog of the map item tab provides the following functionalities (see figure_composer_map_2):

Figure Composer Map 2:

Finestra di dialogo estensione mappa

• The Map extents area allows you to specify the map extent using X and Y min/max values and by clicking the [Set to map canvas extent] button. This button sets the map extent of the composer map item to the extent of the current map view in the main QGIS application. The button [View extent in map canvas] does exactly the opposite, it updates the extent of the map view in the QGIS application to the extent of the composer map item.

If you change the view on the QGIS map canvas by changing vector or raster properties, you can update the Print Composer view by selecting the map element in the Print Composer and clicking the [Update preview] button in the map Item Properties tab (see figure_composer_map_1).

Grids¶

The Grids dialog of the map Item Properties tab provides the the possibility to add several grids to a map item.

• With the plus and minus button you can add or remove a selected grid.
• With the up and down button you can move a grid in the list and set the drawing priority.

When you double click on the added grid you can give it another name.

Figure Composer Map 3:

Map Grids Dialog

After you have added a grid, you can active the checkbox Show grid to overlay a grid onto the map element. Expand this option to provides a lot of configuration options, see Figure_composer_map_4.

Figure Composer Map 4:

Draw Grid Dialog

As grid type, you can specify to use a solid line or cross. Symbology of the grid can be chosen. See section Rendering_Mode. Furthermore, you can define an interval in the X and Y directions, an X and Y offset, and the width used for the cross or line grid type.

Figure Composer Map 5:

Grid Frame Dialog

• There are different options to style the frame that holds the map. Following options are available: No Frame, Zebra, Interior ticks, Exterior ticks, Interior and Exterior ticks and Lineborder.
• Advanced rendering mode is also available for grids (see section Rendering_mode).

• La casella di controllo Scrivi coordinate ti permette di aggiungere le coordinate alla mappa. Le coordinate possono essere scritte dentro o fuori la mappa e puoi scegliere di visualizzare orizzontali o verticali individualmente per ogni lato della mappa. Puoi scegliere le unità in metri o in gradi. Infine puoi anche scegliere il colore del reticolo, il carattere delle coordinate la distanza rispetto alla cornice e la loro precisione.

Figure Composer map 6:

Grid Draw Coordinates dialog

Overviews¶

The Overviews dialog of the map Item Properties tab provides the following functionalities:

Figure Composer Map 7:

Map Overviews Dialog

You can choose to create an overview map, which shows the extents of the other map(s) that are available in the composer. First you need to create the map(s) you want to include in the overview map. Next you create the map you want to use as the overview map, just like a normal map.

• With the plus and minus button you can add or remove an overview.
• With the up and down button you can move an overview in the list and set the drawing priority.

Open Overviews and press the green plus icon-button to add an overview. Initially this overview is named ‘Overview 1’ (see Figure_composer_map_7). You can change the name when you double-click on the overview item in the list named ‘Overview 1’ and change it to another name.

When you select the overview item in the list you can customize it.

• The Draw “<name_overview>” overview needs to be activated to draw the extent of selected map frame.
• The Map frame combo list can be used to select the map item whose extents will be drawn on the present map item.
• The Frame Style allows you to change the style of the overview frame.
• The Blending mode allows you to set different transparency blend modes. See Rendering_Mode.
• The Invert overview creates a mask around the extents when activated: the referenced map extents are shown clearly, whereas everything else is blended with the frame color.
• The Center on overview puts the extent of the overview frame in the center of the overview map. You can only activate one overview item to center, when you have added several overviews.

Proprietà principali¶

• La voce proprietà principali è il posto dove devi inserire il testo (HTML oppure normale) o l’espressione che vuoi che compaia sull’etichetta.

• Puoi inserire del testo HTML per le etichette: spunta la casella di controllo Visualizza come HTML. Ora puoi inserire un URL, un’immagine collegata a un sito web oppure qualcosa di più complesso.

• You can also insert an expression. Click on [Insert an expression] to open a new dialog. Build an expression by clicking the functions available in the left side of the panel. Two special categories can be useful, particularly associated with the atlas functionality: geometry functions and records functions. At the bottom, a preview of the expression is shown.
• Define Font by clicking on the [Font...] button or a Font color selecting a color using the color selection tool.

Allineamento e visualizzazione¶

• La voce Allineamento ti permette di scegliere l’allineamento verticale o orizzontale.

• In the Display tag, you can define a margin in mm. This is the margin from the edge of the composer item.

Proprietà principali¶

The Main properties dialog of the legend Item Properties tab provides the following functionalities (see figure_composer_legend_2):

Figure Composer Legend 2:

Finestra di dialogo proprietà principali della legenda

In Main properties you can:

• Change the title of the legend.
• Set the title alignment to Left, Center or Right.
• You can choose which Map item the current legend will refer to in the select list.
• You can wrap the text of the legend title on a given character.

Oggetti della legenda¶

The Legend items dialog of the legend Item Properties tab provides the following functionalities (see figure_composer_legend_3):

Figure Composer Legend 3:

Finestra di dialogo oggetti legenda

• The legend will be updated automatically if Auto-update is checked. When Auto-update is unchecked this will give you more control over the legend items. The icons below the legend items list will be activated.

• The legend items window lists all legend items and allows you to change item order, group layers, remove and restore items in the list, edit layer names and add a filter.

  • The item order can be changed using the [Up] and [Down] buttons or with ‘drag-and-drop’ functionality. The order can not be changed for WMS legend graphics.
  • Use the [Add group] button to add a legend group.
  • Use the [plus] and [minus] button to add or remove layers.
  • The [Edit] button is used to edit the layer-, groupname or title, first you need to select the legend item.
  • The [Sigma] button adds a feature count for each vector layer.
  • Use the [filter] button the filter the legend by map content, only the legend items visible in the map will be listed in the legend.

  After changing the symbology in the QGIS main window, you can click on [Update] to adapt the changes in the legend element of the Print Composer.

Fonts, Columns, Symbol¶

The Fonts, Columns and Symbol dialogs of the legend Item Properties tab provide the following functionalities (see figure_composer_legend_4):

Figure Composer Legend 4:

Finestra di dialogo caratteri, colonne, simboli e spaziatura legenda

• Puoi cambiare il carattere del titolo, gruppo, sotto-gruppo o elemento singolo della legenda. Clicca sul pulsante corrispondente per aprire la finestra Selezione carattere.

• You provide the labels with a Color using the advanced color picker, however the selected color will be given to all font items in the legen..
• Legend items can be arranged over several columns. Set the number of columns in the Count field.

  • La casella di controllo Uguale larghezza delle colonne imposta come le colonne della legenda devono essere gestite.

  • La casella di controllo Dividi layers ti permette una divisione dei layer in base alla loro categorizzazione.

• Puoi cambiare la larghezza e l’altezza di un simbolo della legenda.

WMS legendGraphic and Spacing¶

The WMS legendGraphic and Spacing dialogs of the legend Item Properties tab provide the following functionalities (see figure_composer_legend_5):

Figure Composer Legend 5:

WMS legendGraphic Dialogs

When you have added a WMS layer and you insert a legend composer item, a request will be send to the WMS server to provide a WMS legend, This Legend will only be shown if the WMS server provides the GetLegendGraphic capability. The WMS legend content will be provided as a raster image.

WMS legendGraphic is used to be able to adjust the Legend width and the legend hight of the WMS legend raster image.

Spacing around title, group, subgroup, symbol, icon label, box space or column space can be customized through this dialog.

Proprietà principali¶

The Main properties dialog of the scale bar Item Properties tab provides the following functionalities (see figure_composer_scalebar_2):

Figure Composer Scalebar 2:

Proprietà principali della barra di scala

• Prima di tutto scegli a quale mappa vuoi aggiungere la barra di scala.

• Poi scegli lo stile della barra di scale. Hai a disposizione sei stili:

  • Riquadro singolo e Riquadro doppio che contengono una o due linee con colori alternati.

  • Linea con tacche al centro, Linea con tacche in basso o Linea con tacche in alto.

  • Numerico che mostra semplicemente il rapporto di scala (per esempio

Unità e segmenti¶

The Units and Segments dialogs of the scale bar Item Properties tab provide the following functionalities (see figure_composer_scalebar_3):

Figure Composer scalebar 3:

Unità e segmenti della barra di scala

In queste due sezioni puoi scegliere come deve essere rappresentata la barra di scala.

• Select the map units used. There are four possible choices: Map Units is the automated unit selection; Meters, Feet or Nautical Miles force unit conversions.

• Specifica nel campo Etichetta il testo che descriverà l’unità scelta.

• Il campo Unità mappa per unità di barra ti permette di fissare il rapporto fra le unità di mappa e la loro rappresentazione nella barra di scala.

• Puoi scegliere quanti Segmenti devono essere disegnati a sinistra e a destra della barra di scala e quanto ogni segmento deve essere lungo (Dimensione). Puoi anche scegliere l’Altezza.

Display¶

The Display dialog of the scale bar Item Properties tab provide the following functionalities (see figure_composer_scalebar_4):

Figure Composer Scalebar 4:

Scale Bar Display

You can define how the scale bar will be displayed in its frame.

• Box margin : space between text and frame borders
• Labels margin : space between text and scale bar drawing
• Line width : line widht of the scale bar drawing
• Join style : Corners at the end of scalebar in style Bevel, Rounded or Square (only available for Scale bar style Single Box & Double Box)
• Cap style : End of all lines in style Square, Round or Flat (only available for Scale bar style Line Ticks Up, Down and Middle)
• Alignment : Puts text on the left, middle or right side of the frame (works only for Scale bar style Numeric)

Fonts and colors¶

The Fonts and colors dialog of the scale bar Item Properties tab provide the following functionalities (see figure_composer_scalebar_5):

Figure Composer Scalebar 5:

Scale Bar Fonts and colors Dialogs

You can define the fonts and colors used for the scale bar.

• Use the [Font] button to set the font
• Font color: set the font color
• Fill color: set the first fill color
• Secondary fill color: set the second fill color
• Stroke color: set the color of the lines of the Scale Bare

Fill colors are only used for scale box styles Single Box and Double Box. To select a color you can use the list option using the dropdown arrow to open a simple color selection option or the more advanced color selection option, that is started when you click in the colored box in the dialog.

Item Properties¶

The Arrow item properties tab allows you to configure an arrow item.

The [Line style ...] button can be used to set the line style using the line style symbol editor.

In Arrows markers you can select one of three radio buttons.

• Default : To draw a regular arrow, gives you options to style the arrow head
• None : To draw a line without arrow head
• SVG Marker : To draw a line with an SVG Start marker and/or End marker

For Default Arrow marker you can use following options to style the arrow head.

• Arrow outline color : Set the outline color of the arrow head
• Arrow fill color : Set the fill color of the arrow head
• Arrow outline width : Set the outline width of the arrow head
• Arrow head width: Set the size of the arrow head

For SVG Marker you can use following options.

• Start marker : Choose an SVG image to draw at the beginning of the line
• End marker : Choose an SVG image to draw at the end of the line
• Arrow head width: Sets the size of Start and/or headmarker

SVG images are automatically rotated with the line. The color of the SVG image can not be changed.

Proprietà principali¶

The Main properties dialogs of the attribute table Item Properties tab provide the following functionalities (see figure_composer_table_2):

Figure Composer Attribute Table 2:

Attribute table Main properties Dialog

• For Source you can normally select only ‘Layer features’.

• With Layer you can choose from the vector layers loaded in the project.

• The button [Refresh table data] can be used to refresh the table when the actual contents of the table has changed.

• The button [Attributes...] starts the Select attributes menu, see figure_composer_table_3, that can be used to change the visible contents of the table. After making changes use the [OK] button to apply changes to the table.

  In the Columns section you can:

  • Remove an attribute, just select an attribute row by clicking anywhere in a row and press the minus button to remove the selected attribute.
  • Add a new attribute use the plus button. At the end a new empty row appears and you can select empty cell of the column Attribute. You can select a field attribute from the list or you can select to build a new attribute using a regular expression.
  • Use the up and down arrows to change the order of the attributes in the table.
  • Select a cel in the Headings column to change the Heading, just type a new name.
  • Select a cel in the Alignment column and you can choose between Left, Center or Right alignment.
  • Select a cel in the Width column and you can change it from Automatic to a width in mm, just type a number. When you want to change it back to Automatic, use the cross.
  • The [Reset] button can allways be used to restore it to the original attribute settings.

  In the Sorting section you can:

  • Add an attribute to sort the table with. Select an attribute and set the sorting order to ‘Ascending’ or ‘Descending’ and press the plus button. A new line is added to the sort order list.
  • select a row in the list and use the up and down button to change the sort priority on attribute level.
  • use the minus button to remove an attribute from the sort order list.

Figure Composer Attribute Table 3:

Finestra di dialogo scegli attributo

Feature filtering¶

The Feature filtering dialogs of the attribute table Item Properties tab provide the following functionalities (see figure_composer_table_4):

Figure Composer Attribute Table 4:

Attribute table Feature filtering Dialog

You can:

• Define the Maximum rows to be displayed.

• Activate Remove duplicate rows from table to show unique records only.

• Activate Show only visible features within a map and select the corresponding Composer map to display the attributes of features only visible on selected map.

• Activate Show only features intersecting Atlas feature is only available when Generate an atlas is activated. When activated it will show a table with only the features shown on the map of that particular page of the atlas.

• Activate Filter with and provide a filter by typing in the input line or insert a regular expressing use the given expression button. A few examples of filtering statements you can use when you have loaded the airports layer from the Sample dataset:

  • ELEV > 500
  • NAME = 'ANIAK'
  • NAME NOT LIKE 'AN%
  • regexp_match( attribute( $currentfeature, 'USE' )  , '[i]')

  The last regular expression will include only the arpoirts that have a letter ‘i’ in the attribute field ‘USE’.

Appearance¶

The Appearance dialogs of the attribute table Item Properties tab provide the following functionalities (see figure_composer_table_5):

Figure Composer Attribute Table 5:

Attribute table appearance Dialog

• With Cell margins you can define the margin around text in each cell of the table.
• With Display header you can select from a list one of ‘On first frame’, ‘On all frames’ default option, or ‘No header’.
• The option Empty table controls what will be displayed when the result selection is empty.
  • Draw headers only, will only draw the header except if you have choosen ‘No header’ for Display header.
  • Hide entire table, will only draw the background of the table. You can activate Don’t draw background if frame is empty in Frames to completely hide the table.
  • Draw empty cells, will fill the attribute table with empty cells, this option can also be used to provide additional empty cells when you have a result to show!
  • Show set message, will draw the header and adds a cell spanning all columns and display a message like ‘No result’ that can be provided in the option Message to display
• The option Message to display is only activated when you have selected Show set message for Empty table. The message provided will be shown in the table in the first row, when the result is an empty table.
• With Background color you can set the background color of the table.

Show grid¶

The Show grid dialog of the attribute table Item Properties tab provide the following functionalities (see figure_composer_table_6):

Figure Composer Attribute Table 6:

Attribute table Show grid Dialog

• Activate Show grid when you want to display the grid, the outlines of the table cells.
• With Stroke width you can set the thickness of the lines used in the grid.
• The Color of the grid can be set using the color selection dialog.

Fonts and text styling¶

The Fonts and text styling dialog of the attribute table Item Properties tab provide the following functionalities (see figure_composer_table_7):

Figure Composer Attribute Table 7:

Attribute table Fonts and text styling Dialog

• You can define Font and Color for Table heading and Table contents.
• For Table heading you can additionally set the Alignment and choose from Follow column alignment, Left, Center or Right. The column alignment is set using the Select Attributes dialog (see Figure_composer_table_3 ).

Frames¶

The Frames dialog of the attribute table Item Properties tab provide the following functionalities (see figure_composer_table_8):

Figure Composer Attribute Table 8:

Attribute table Frames Dialog

• With Resize mode you can select how to render the attribute table contents:
  • Use existing frames displays the result in the first frame and added frames only.
  • Extent to next page will create as many frames (and corresponding pages) as necessary to display the full selection of attribute table. Each frame can be moved around on the layout. If you resize a frame, the resulting table will be divided up between the other frames. The last frame will be trimmed to fit the table.
  • Repeat until finished will also create as many frames as the Extend to next page option, except all frames will have the same size.
• Use the [Add Frame] button to add another frame with the same size as selected frame. The result of the table that will not fit in the first frame will continue in the next frame when you use the Resize mode Use existing frames.
• Activate Don’t export page if frame is empty prevents the page to be exported when the table frame has no contents. This means all other composer items, maps, scalebars, legends etc. will not be visible in the result.
• Activate Don’t draw background if frame is empty prevents the background to be drawn when the table frame has no contents.

HTML Source¶

As an HTML source, you can either set a URL and activate the URL radiobutton or enter the HTML source directly in the textbox provided and activate the Source radiobutton.

The HTML Source dialog of the HTML frame Item Properties tab provides the following functionalities (see figure_composer_html_2):

Figure Composer HTML 2:

HTML frame, the HTML Source properties

• In URL you can enter the URL of a webpage you copied from your internet browser or select an HTML file using the browse button . There is also the option to use the Data defined override button, to provide an URL from the contents of an attribute field of a table or using a regular expression.
• In Source you can enter text in the textbox with some HTML tags or provide a full HTML page.
• The [insert an expression] button can be used to insert an expression like [%Year($now)%] in the Source textbox to display the current year. This button is only activated when radiobutton Source is selected. After inserting the expression click somewhere in the textbox before refreshing the HTML frame, otherwise you will lose the expression.
• Activate Evaluate QGIS expressions in HTML code to see the result of the expression you have included, otherwise you will see the expression instead.
• Use the [Refresh HTML] button to refresh the HTML frame(s) to see the result of changes.

Frames¶

The Frames dialog of the HTML frame Item Properties tab provides the following functionalities (see figure_composer_html_3):

Figure Composer HTML 3:

HTML frame, the Frames properties

• With Resize mode you can select how to render the HTML contents:
  • Use existing frames displays the result in the first frame and added frames only.
  • Extent to next page will create as many frames (and corresponding pages) as necessary to render the height of the web page. Each frame can be moved around on the layout. If you resize a frame, the webpage will be divided up between the other frames. The last frame will be trimmed to fit the web page.
  • Repeat on every page will repeat the upper left of the web page on every page in frames of the same size.
  • Repeat until finished will also create as many frames as the Extend to next page option, except all frames will have the same size.
• Use the [Add Frame] button to add another frame with the same size as selected frame. If the HTML page that will not fit in the first frame it will continue in the next frame when you use Resize mode or Use existing frames.
• Activate Don’t export page if frame is empty prevents the map layout from being exported when the frame has no HTML contents. This means all other composer items, maps, scalebars, legends etc. will not be visible in the result.
• Activate Don’t draw background if frame is empty prevents the HTML frame being drawn if the frame is empty.

Use smart page breaks and User style sheet¶

The Use smart page breaks dialog and Use style sheet dialog of the HTML frame Item Properties tab provides the following functionalities (see figure_composer_html_4):

Figure Composer HTML 4:

HTML frame, Use smart page breaks and User stylesheet properties

• Activate Use smart page breaks to prevent the html frame contents from breaking mid-way a line of text so it continues nice and smooth in the next frame.

• Set the Maximum distance allowed when calculating where to place page breaks in the html. This distance is the maximum amount of empty space allowed at the bottom of a frame after calculating the optimum break location. Setting a larger value will result in better choice of page break location, but more wasted space at the bottom of frames. This is only used when Use smart page breaks is activated.

• Activate User stylesheet to apply HTML styles that often is provided in cascading style sheets. An example of style code is provide below to set the color of <h1> header tag to green and set the font and fontsize of text included in paragraph tags <p>.

  h1 {color: #00ff00;
  }
  p {font-family: "Times New Roman", Times, serif;
     font-size: 20px;
  }
  

• Use the [Update HTML] button to see the result of the stylesheet settings.